Archive

15 July 2011, Volume 30 Issue S1 Previous Issue    Next Issue

---

For Selected:

Download Citations EndNote Ris BibTeX

Toggle Thumbnails

Select

Developing Process of Debris FloWon Slope of Engineening Slag LIU Fei ,，TANG Hong-Mei 2011, 30(S1): 519-522.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.001 Abstract ( )   PDF (379KB) ( )   Abstract：In vieWof test model，test materials，test equipment and testing content，one test plan of debris floWon slope of engineering slag was established．Meanwhile，the test schedule was clarified as that the rainfall duration is 16 -18 hours，of which 0-13 hours was the previous rainfall stage and rainfall intensity was 6．8 mm／10min completed in 4 times．And each rainfall and pause durations were 1 hour and 2 hours separately．It was the stage of the heavy rainfall of short duration after 13 hours during which rainfall intensity was 16．7 mm／10min． The physical and mechanical properties of the formation processes of debris floWon slope of engineering slag were demonstrated through the analysis of the change of moisture con- tent，pore water pressure and surface displacement elevation with rainfall duration of engineering slag on slope References | Related Articles | Metrics

Select

Developing Process of Debris FloWon Slope of Engineening Slag LIU Fei ,，TANG Hong-Mei 2011, 30(S1): 519-522.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.001 Abstract ( )   PDF (379KB) ( )   Abstract：In vieWof test model，test materials，test equipment and testing content，one test plan of debris floWon slope of engineering slag was established．Meanwhile，the test schedule was clarified as that the rainfall duration is 16 -18 hours，of which 0-13 hours was the previous rainfall stage and rainfall intensity was 6．8 mm／10min completed in 4 times．And each rainfall and pause durations were 1 hour and 2 hours separately．It was the stage of the heavy rainfall of short duration after 13 hours during which rainfall intensity was 16．7 mm／10min． The physical and mechanical properties of the formation processes of debris floWon slope of engineering slag were demonstrated through the analysis of the change of moisture con- tent，pore water pressure and surface displacement elevation with rainfall duration of engineering slag on slope References | Related Articles | Metrics

Select

Failure MechanisMof Abutment Slope Sliding in Meizoseismal Area LIU Rong-can ,，TANG Hong-mei ，JIANG Jin-chi ，LIU Jun 2011, 30(S1): 523-525.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.002 Abstract ( )   PDF (205KB) ( )   ：Aiming at the phenomenon a large number of abutment slopes have sliding failure in Wenchuan Earthquake，a theoretic study of abutment slope sliding under seismic effect is carried out． According to Mises floWrule，the abutment slope sliding velocity as well as its angle between sliding lines under ea~hquake are obtained．In that case，the energy con- sumption of the work force acting on the slope and the plastic floWis obtained．And then，on the basis of principle that the work done by external forces is equivalent to internal energy consumption，the maximuMslope seismic active earth pressure and the corresponding angle of sliding surface are finally got．Integrating the energy dissipation theory and the dynamic response to slope slide，the safety assessment of slope sliding under seismic effect is carried out References | Related Articles | Metrics

Select

Failure MechanisMof Abutment Slope Sliding in Meizoseismal Area LIU Rong-can ,，TANG Hong-mei ，JIANG Jin-chi ，LIU Jun 2011, 30(S1): 523-525.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.002 Abstract ( )   PDF (205KB) ( )   ：Aiming at the phenomenon a large number of abutment slopes have sliding failure in Wenchuan Earthquake，a theoretic study of abutment slope sliding under seismic effect is carried out． According to Mises floWrule，the abutment slope sliding velocity as well as its angle between sliding lines under ea~hquake are obtained．In that case，the energy con- sumption of the work force acting on the slope and the plastic floWis obtained．And then，on the basis of principle that the work done by external forces is equivalent to internal energy consumption，the maximuMslope seismic active earth pressure and the corresponding angle of sliding surface are finally got．Integrating the energy dissipation theory and the dynamic response to slope slide，the safety assessment of slope sliding under seismic effect is carried out References | Related Articles | Metrics

Select

Finite Element Analysis on BottoMBearing Conditions of Rock-socketed Anti-slide Pile HUANG Xiao peng ，YANG Shu-bao ，LIU Guang-hua ，GUO Ying-zhong 2011, 30(S1): 526-529.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.003 Abstract ( )   PDF (293KB) ( )   In consideration of the interaction between pile alld rock．the internal forces of a whole pile were analyzed by u- sing plane elastic-plastic finite element method．Using traditional‘‘K” method，the inner forces of a pile was calculated con- sidering pile bottoMbearing conditions as fixation，hinge，and freedoMrespectively，and then comparison was made with the finite element method．The comparison results shoWthat the internal force result of traditional“K” method is close to the re- suit of FEA． Therefore，pile bottoMbearing condition should be fixation in the design of rock-socketed pile． References | Related Articles | Metrics

Select

Finite Element Analysis on BottoMBearing Conditions of Rock-socketed Anti-slide Pile HUANG Xiao peng ，YANG Shu-bao ，LIU Guang-hua ，GUO Ying-zhong 2011, 30(S1): 526-529.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.003 Abstract ( )   PDF (293KB) ( )   In consideration of the interaction between pile alld rock．the internal forces of a whole pile were analyzed by u- sing plane elastic-plastic finite element method．Using traditional‘‘K” method，the inner forces of a pile was calculated con- sidering pile bottoMbearing conditions as fixation，hinge，and freedoMrespectively，and then comparison was made with the finite element method．The comparison results shoWthat the internal force result of traditional“K” method is close to the re- suit of FEA． Therefore，pile bottoMbearing condition should be fixation in the design of rock-socketed pile． References | Related Articles | Metrics

Select

Geological Tectonic Cycle and Its Astronomical Background LI Lun-jiong ，SUN Chuan-min’，WU Chun-mei ，DU Ping 2011, 30(S1): 530-532.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.005 Abstract ( )   PDF (332KB) ( )   The solar systeMand the Galaxy，where the earth is located in，are in constant motion in the universe system． The evolution of the giant systeMcompletely depends on attraction and repulsion between various celestial bodies periodical- ly．Hence in the systeM，the motion period of the earth is formed by the combined effect of astronomical background factors， such as galactic season，galactic plane wave，spiral compression，luna-solar tidal force and precession，etc．And the~rmed motion period of the earth generates a sequence of geological tectonic cycle in different scale．Therefore，the geological tee- tonic cycle occurred in a specific geological and astronomical background． References | Related Articles | Metrics

Select

Geological Tectonic Cycle and Its Astronomical Background LI Lun-jiong ，SUN Chuan-min’，WU Chun-mei ，DU Ping 2011, 30(S1): 530-532.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.005 Abstract ( )   PDF (332KB) ( )   The solar systeMand the Galaxy，where the earth is located in，are in constant motion in the universe system． The evolution of the giant systeMcompletely depends on attraction and repulsion between various celestial bodies periodical- ly．Hence in the systeM，the motion period of the earth is formed by the combined effect of astronomical background factors， such as galactic season，galactic plane wave，spiral compression，luna-solar tidal force and precession，etc．And the~rmed motion period of the earth generates a sequence of geological tectonic cycle in different scale．Therefore，the geological tee- tonic cycle occurred in a specific geological and astronomical background． References | Related Articles | Metrics

Select

Research on Elastic and Impulsive Dynamic Charateristics of Landslides ZHANG Rui-gang ，TANG Hong-mei ，CHEN Hong-kai 2011, 30(S1): 533-535.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.006 Abstract ( )   PDF (253KB) ( )   The reservoir water level fluctuation of the three gorges directly induced thousands of rock fall and collapses．The elastic and impulsive dynamic characteristics of landslides are urgent tO be studied．Mechanical model is established to re- search the tension-shear perilous rock，and it finds out the expression of the elastic and impulsive kinetic energy of perilous rock．Through the mathematical and physical description，it gets the index of judging perilous rock dynamic instability and indicates that accumulating energy will release and transforMto the elastic and impulsive kinetic energy by collapse．Moreover， it reveals the relationship between releasing amount of energy in the dynamic systeMand the dynamic parameters． References | Related Articles | Metrics

Select

Research on Elastic and Impulsive Dynamic Charateristics of Landslides ZHANG Rui-gang ，TANG Hong-mei ，CHEN Hong-kai 2011, 30(S1): 533-535.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.006 Abstract ( )   PDF (253KB) ( )   The reservoir water level fluctuation of the three gorges directly induced thousands of rock fall and collapses．The elastic and impulsive dynamic characteristics of landslides are urgent tO be studied．Mechanical model is established to re- search the tension-shear perilous rock，and it finds out the expression of the elastic and impulsive kinetic energy of perilous rock．Through the mathematical and physical description，it gets the index of judging perilous rock dynamic instability and indicates that accumulating energy will release and transforMto the elastic and impulsive kinetic energy by collapse．Moreover， it reveals the relationship between releasing amount of energy in the dynamic systeMand the dynamic parameters． References | Related Articles | Metrics

Select

A Model for Grouting into Single Fracture with Flowing Water Based on TiMe-dependent Behavior of Viscosity TIAN Mei-xia 2011, 30(S1): 536-539.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.007 Abstract ( )   PDF (193KB) ( )   A mathematical model for grouting into a fracture with flowing water based on time-dependent behavior of viscosity was built through theoretical analysis．The study results fill the gaps of having not a mold for grouting into single fracture with flowing water based on time-dependent behavior of viscosity．And it can improve the technology of grouting based on different time·dependent behavior of viscosity and the velocity of flow． References | Related Articles | Metrics

Select

A Model for Grouting into Single Fracture with Flowing Water Based on TiMe-dependent Behavior of Viscosity TIAN Mei-xia 2011, 30(S1): 536-539.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.007 Abstract ( )   PDF (193KB) ( )   A mathematical model for grouting into a fracture with flowing water based on time-dependent behavior of viscosity was built through theoretical analysis．The study results fill the gaps of having not a mold for grouting into single fracture with flowing water based on time-dependent behavior of viscosity．And it can improve the technology of grouting based on different time·dependent behavior of viscosity and the velocity of flow． References | Related Articles | Metrics

Select

Monitoring and Analyzing with GPS Technology of Landslides in Yunyang of the Three Gorges Reservoir FU Chong-jiang，ZHANG Bin，ZHU Yun，LIU Zhao-qing，SUN Feng，ZHANG Shun-bin 2011, 30(S1): 538-540.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.008 Abstract ( )   PDF (219KB) ( )   The rapid development of GPS positioning technique has provided a quick，eficient and reliable way for landslide monitoring．GPS technology was used to monitor the Qulong village landslide of Yunyang area of the Three Gorges Reservoir． In order to track timevarying dynamic displacement of the landslide，the circumstances of the monitoring points were ana一 ]yzed according to the time-series curves of the monitoring points．The engineering practices prove that the monitoring tech- nique and the analysis method can be applied quickly and efectively to the most of the landslide monitoring of the reservoir． References | Related Articles | Metrics

Select

Monitoring and Analyzing with GPS Technology of Landslides in Yunyang of the Three Gorges Reservoir FU Chong-jiang，ZHANG Bin，ZHU Yun，LIU Zhao-qing，SUN Feng，ZHANG Shun-bin 2011, 30(S1): 538-540.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.008 Abstract ( )   PDF (219KB) ( )   The rapid development of GPS positioning technique has provided a quick，eficient and reliable way for landslide monitoring．GPS technology was used to monitor the Qulong village landslide of Yunyang area of the Three Gorges Reservoir． In order to track timevarying dynamic displacement of the landslide，the circumstances of the monitoring points were ana一 ]yzed according to the time-series curves of the monitoring points．The engineering practices prove that the monitoring tech- nique and the analysis method can be applied quickly and efectively to the most of the landslide monitoring of the reservoir． References | Related Articles | Metrics

Select

Application of Mixed Retaining Structure in Engineering TANG Qiu-yuan，SHI Yi，ZHOU Feng，YUAN Heng 2011, 30(S1): 541-544.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.009 Abstract ( )   PDF (406KB) ( )   Mixed retaining structure is usually used in the treatment engineering of high and steep slope，geological complicated environment slope． It is a comprehensive retaining systeMwhich is set in the top and bottoMof the slope to withstand loads of rock and soil slope by the interaction and coordination of different retaining structure．According to the design prac- tice，there are nine types of common mixed retaining structures and the study on the mechanics characteristic and design method of mixed retaining structure is very necessary．Different retaining structures are not isolated，but has effects on each other．The effects can be direct or indirect passing through the rock and soil mass． The key probleMin geotechnical engi- neering and construction is hoWto consider the efect． References | Related Articles | Metrics

Select

Application of Mixed Retaining Structure in Engineering TANG Qiu-yuan，SHI Yi，ZHOU Feng，YUAN Heng 2011, 30(S1): 541-544.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.009 Abstract ( )   PDF (406KB) ( )   Mixed retaining structure is usually used in the treatment engineering of high and steep slope，geological complicated environment slope． It is a comprehensive retaining systeMwhich is set in the top and bottoMof the slope to withstand loads of rock and soil slope by the interaction and coordination of different retaining structure．According to the design prac- tice，there are nine types of common mixed retaining structures and the study on the mechanics characteristic and design method of mixed retaining structure is very necessary．Different retaining structures are not isolated，but has effects on each other．The effects can be direct or indirect passing through the rock and soil mass． The key probleMin geotechnical engi- neering and construction is hoWto consider the efect． References | Related Articles | Metrics

Select

Formation MechanisMand Failure Mode of Wangxia Perilous Rock in Wushan County in Chongqing ZHAO Peng，YU Shu，HU Yi-de，HUANG Xiao-peng 2011, 30(S1): 545-549.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.010 Abstract ( )   PDF (671KB) ( )   The conformation of formation mechanisMand failure mode of perilous rock is a prerequisite to carry out the effec- tive treatment measures on perilous rock． Based on the theory of geography，engineering geology，rock mechanics，the for- mation mechanisMand failure ulode of Wangxia perilous rock in Wushan County，Chongqing are researched；meanwhile， the suggestion to treatment measures is put forward purposefully．A corresponding theoretic foundation for deeper research on the mechanisMand effective engineering control of similar perilous rocks in Three Gorges Reservoir is established． References | Related Articles | Metrics

Select

Formation MechanisMand Failure Mode of Wangxia Perilous Rock in Wushan County in Chongqing ZHAO Peng，YU Shu，HU Yi-de，HUANG Xiao-peng 2011, 30(S1): 545-549.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.010 Abstract ( )   PDF (671KB) ( )   The conformation of formation mechanisMand failure mode of perilous rock is a prerequisite to carry out the effec- tive treatment measures on perilous rock． Based on the theory of geography，engineering geology，rock mechanics，the for- mation mechanisMand failure ulode of Wangxia perilous rock in Wushan County，Chongqing are researched；meanwhile， the suggestion to treatment measures is put forward purposefully．A corresponding theoretic foundation for deeper research on the mechanisMand effective engineering control of similar perilous rocks in Three Gorges Reservoir is established． References | Related Articles | Metrics

Select

Numerical Analysis on Pile-Soil Interaction of Precast Pipe Pile under Vertical Loading REN Xiu·wed，TAN Liang，FENG Fan 2011, 30(S1): 550-554.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.011 Abstract ( )   PDF (336KB) ( )   Based on the application of precast pipe pile in Peitun area in Xuzhou，the numerical model of pile-soil is established with FLAC3 D．The mechanisMof interaction between pipe pile and soil under vertical loading is analyzed，including the load transforming rule，stress features and failure modes，according to the established numerical model of pile-soil．The results provide a theoretic foundation for the further analysis on the bearing mechanisMof pipe pile References | Related Articles | Metrics

Select

Numerical Analysis on Pile-Soil Interaction of Precast Pipe Pile under Vertical Loading REN Xiu·wed，TAN Liang，FENG Fan 2011, 30(S1): 550-554.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.011 Abstract ( )   PDF (336KB) ( )   Based on the application of precast pipe pile in Peitun area in Xuzhou，the numerical model of pile-soil is established with FLAC3 D．The mechanisMof interaction between pipe pile and soil under vertical loading is analyzed，including the load transforming rule，stress features and failure modes，according to the established numerical model of pile-soil．The results provide a theoretic foundation for the further analysis on the bearing mechanisMof pipe pile References | Related Articles | Metrics

Select

Analysis on Settlement Characteristics and Forecasting Model of Post-Construction Settlement of Loess Embankment SUN Fa·xin，GUAN Liang，LI Can-liang 2011, 30(S1): 555-558.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.012 Abstract ( )   PDF (301KB) ( )   The distribution and the nature of loess are expounded and then the mechanisMand the cause of loess embank- ment settlement are analyzed．The valuable models based on the measured data for forecasting post-construction settlement of loess embankment are analyzed and compared，including the exponential model，power function model and hyperbolic mod- e1．Finally，in the case of the exponential model，the parameters of the forecasting model are determined according to the measured data of some dam． References | Related Articles | Metrics

Select

Analysis on Settlement Characteristics and Forecasting Model of Post-Construction Settlement of Loess Embankment SUN Fa·xin，GUAN Liang，LI Can-liang 2011, 30(S1): 555-558.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.012 Abstract ( )   PDF (301KB) ( )   The distribution and the nature of loess are expounded and then the mechanisMand the cause of loess embank- ment settlement are analyzed．The valuable models based on the measured data for forecasting post-construction settlement of loess embankment are analyzed and compared，including the exponential model，power function model and hyperbolic mod- e1．Finally，in the case of the exponential model，the parameters of the forecasting model are determined according to the measured data of some dam． References | Related Articles | Metrics

Select

Discussion on Safety Factor of Landslide Thrust Design Value TANG Fen 2011, 30(S1): 559-562.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.013 Abstract ( )   PDF (322KB) ( )   The landslide thrust force design value difiers in different safety factor definition．A discussion on the influence on the thrust value in different safety definition is proposed．The thrust force design value adapted landslide load-increased fac- tor is the maximuMand the one in the same safety strength factor is bigger than that in double strength safety factor．The trust value analysis using two reduction factors is put forward at the first time．It conforms to slope’S realities best．The val- He in Imbalanced Trust Method should adjust a little because of landslide load-increased factor and the contribution for the resistance is without the consideration．The method using double strength safety factors for the thrust is put forward，which provides reference and discussion SO as to gradually become a consensus． References | Related Articles | Metrics

Select

Discussion on Safety Factor of Landslide Thrust Design Value TANG Fen 2011, 30(S1): 559-562.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.013 Abstract ( )   PDF (322KB) ( )   The landslide thrust force design value difiers in different safety factor definition．A discussion on the influence on the thrust value in different safety definition is proposed．The thrust force design value adapted landslide load-increased fac- tor is the maximuMand the one in the same safety strength factor is bigger than that in double strength safety factor．The trust value analysis using two reduction factors is put forward at the first time．It conforms to slope’S realities best．The val- He in Imbalanced Trust Method should adjust a little because of landslide load-increased factor and the contribution for the resistance is without the consideration．The method using double strength safety factors for the thrust is put forward，which provides reference and discussion SO as to gradually become a consensus． References | Related Articles | Metrics

Select

MechanisMStudy on Ground Subsidence Damage of Abutment Failure in MeizoseisMal Area XIANG Qing-gang ，CHEN Hong-kai ，LIAO Yun-ping ,· ，LIU Rong-can, 2011, 30(S1): 563-565.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.014 Abstract ( )   PDF (179KB) ( )   For a large number of abutment~undation failure and subgrade subsidence occurred in Wenchuan eaahquake，a study on the bridge abutment ground subsidence under ea~hquake was made．Based on Prandtl theory and Coulomb wedge equilibriuMcondition，Mononobe-Okabe ea~hquake formula was adopted considering the impact of shear friction force of in- terface and the calculating formula of ground bearing capacity under earthquake was made out．According to this formula， the safety assessment of the~undation intensity reduced in earthquake could be easily carried out． References | Related Articles | Metrics

Select

MechanisMStudy on Ground Subsidence Damage of Abutment Failure in MeizoseisMal Area XIANG Qing-gang ，CHEN Hong-kai ，LIAO Yun-ping ,· ，LIU Rong-can, 2011, 30(S1): 563-565.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.014 Abstract ( )   PDF (179KB) ( )   For a large number of abutment~undation failure and subgrade subsidence occurred in Wenchuan eaahquake，a study on the bridge abutment ground subsidence under ea~hquake was made．Based on Prandtl theory and Coulomb wedge equilibriuMcondition，Mononobe-Okabe ea~hquake formula was adopted considering the impact of shear friction force of in- terface and the calculating formula of ground bearing capacity under earthquake was made out．According to this formula， the safety assessment of the~undation intensity reduced in earthquake could be easily carried out． References | Related Articles | Metrics

Select

Ultimate Bearing Capacity of Karst Foundation Treated by Crossing Method JIANG Xu-hui ，LUO Xiao-lin ，LI Xie-neng，ZHOU Wei-bin 2011, 30(S1): 566-568.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.015 Abstract ( )   PDF (279KB) ( )   The interactions of collapsed soil and ground, limiting equilibriuMtheory have been developed to deduce the calculation formula for ultimate bearing capacity of Karsts collapsed foundation. Comparative analysis between beaMand plate spanning is carried out; it is found that the ultimate bearing capacity and shear strength of collapsed soil will play a key role on the uhimate bearing capacity of ground. Owing to the difference of the ultimate bearing capacity, if it is treated with the proper rammed of collapsed soil, the uhimate bearing capacity of foundation will be increased when ground is treated with beaMspanning; nevertheless, the ground ultimate bearing capacity will be not obvious when ground is treated with plate spanning. These results will provide practical value for the design and construction of karst foundation treated by crossing treatment. References | Related Articles | Metrics

Select

Ultimate Bearing Capacity of Karst Foundation Treated by Crossing Method JIANG Xu-hui ，LUO Xiao-lin ，LI Xie-neng，ZHOU Wei-bin 2011, 30(S1): 566-568.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.015 Abstract ( )   PDF (279KB) ( )   The interactions of collapsed soil and ground, limiting equilibriuMtheory have been developed to deduce the calculation formula for ultimate bearing capacity of Karsts collapsed foundation. Comparative analysis between beaMand plate spanning is carried out; it is found that the ultimate bearing capacity and shear strength of collapsed soil will play a key role on the uhimate bearing capacity of ground. Owing to the difference of the ultimate bearing capacity, if it is treated with the proper rammed of collapsed soil, the uhimate bearing capacity of foundation will be increased when ground is treated with beaMspanning; nevertheless, the ground ultimate bearing capacity will be not obvious when ground is treated with plate spanning. These results will provide practical value for the design and construction of karst foundation treated by crossing treatment. References | Related Articles | Metrics

Select

Intrinsic Factor Analysis and Engineering Treatment of Daijiagou Mine Debris Flow WEN Guang-ju，HE Xiao-ying 2011, 30(S1): 569-572.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.016 Abstract ( )   PDF (328KB) ( )   Daijiagou gully is a place of potential debris flow．with a flow-afected area of nearly 1．25×10m．The debris floWsource mainly is slag which is about 1．2 ×1 0。M． After site sampling and analyzing clay minerals with X-difraction spectruMmethod．According to the structure and physical characteristics of clay mineral，the reasons which induced debris floWwere analyzed froMthe microscopic point of view．The result shows that clay minerals which has immense surface and hydrophilicity could promote the formation of debris flow．Based on the analysis of source characteristics，discharge of debris flow，velocity and snatch force，gravity debris retaining daMand high-speed drainage structure were adopted to control the debris flow． References | Related Articles | Metrics

Select

Intrinsic Factor Analysis and Engineering Treatment of Daijiagou Mine Debris Flow WEN Guang-ju，HE Xiao-ying 2011, 30(S1): 569-572.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.016 Abstract ( )   PDF (328KB) ( )   Daijiagou gully is a place of potential debris flow．with a flow-afected area of nearly 1．25×10m．The debris floWsource mainly is slag which is about 1．2 ×1 0。M． After site sampling and analyzing clay minerals with X-difraction spectruMmethod．According to the structure and physical characteristics of clay mineral，the reasons which induced debris floWwere analyzed froMthe microscopic point of view．The result shows that clay minerals which has immense surface and hydrophilicity could promote the formation of debris flow．Based on the analysis of source characteristics，discharge of debris flow，velocity and snatch force，gravity debris retaining daMand high-speed drainage structure were adopted to control the debris flow． References | Related Articles | Metrics

Select

Simplified Calculation Method of the BottoMof V-Shaped Drainage SUN Xiao-yong ， CHEN Hong-kai ，LIU Guang-hua ，，LIU Fei 2011, 30(S1): 573-575.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.017 Abstract ( )   PDF (192KB) ( )   Abstract：The V shaped drainage is one of widely used countermeasures against debris flow in the civil engineering．However，the previous calculation of the internal force of V-shaped drainage’S bottoMis very complex，which is also dificult to apply to the actual project．Therefore，the simplified method is adopted to calculate the internal force of V-shaped drainage； meanwhile，the results got by the simplified calculation are compared with the ones got by exact calculation． Besides ， the simplified magnification coefi cients are finally given，which is benefit fore the engineering application References | Related Articles | Metrics

Select

Simplified Calculation Method of the BottoMof V-Shaped Drainage SUN Xiao-yong ， CHEN Hong-kai ，LIU Guang-hua ，，LIU Fei 2011, 30(S1): 573-575.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.017 Abstract ( )   PDF (192KB) ( )   Abstract：The V shaped drainage is one of widely used countermeasures against debris flow in the civil engineering．However，the previous calculation of the internal force of V-shaped drainage’S bottoMis very complex，which is also dificult to apply to the actual project．Therefore，the simplified method is adopted to calculate the internal force of V-shaped drainage； meanwhile，the results got by the simplified calculation are compared with the ones got by exact calculation． Besides ， the simplified magnification coefi cients are finally given，which is benefit fore the engineering application References | Related Articles | Metrics

Select

Design Reasons about Quality Accident of Slope Engineering LEI Yong ，LIU Chang-lin 2011, 30(S1): 576-579.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.018 Abstract ( )   PDF (301KB) ( )   By analyzing tile causes of quality accidents ot slope engineering，it is discovered some nlain problems in design， such as probleMabout selection scheme of retaining structure，probleMabout base of design，probleMabout destructive model of slope arid calculation method，probleMabou t the value of theoretical destructive angle of the rock slope，probleMa- bout calculation of internal force and combination，and probleMabout treatment of structure and construction． At the same time，these problems in design reveal that a thorough and meticulous analysis needs to be nlade in design in various aspects， which can avoid some quality accidents due to the improper design． Moreover，this is also very important to reduce the geotechnical engineering disaster References | Related Articles | Metrics

Select

Design Reasons about Quality Accident of Slope Engineering LEI Yong ，LIU Chang-lin 2011, 30(S1): 576-579.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.018 Abstract ( )   PDF (301KB) ( )   By analyzing tile causes of quality accidents ot slope engineering，it is discovered some nlain problems in design， such as probleMabout selection scheme of retaining structure，probleMabout base of design，probleMabout destructive model of slope arid calculation method，probleMabou t the value of theoretical destructive angle of the rock slope，probleMa- bout calculation of internal force and combination，and probleMabout treatment of structure and construction． At the same time，these problems in design reveal that a thorough and meticulous analysis needs to be nlade in design in various aspects， which can avoid some quality accidents due to the improper design． Moreover，this is also very important to reduce the geotechnical engineering disaster References | Related Articles | Metrics

Select

Fully Dynamic Analysis Method for Seismic Stability of Slope ZHAO Biao ，，CHEN Hong-kai 2011, 30(S1): 580-583.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.019 Abstract ( )   PDF (280KB) ( )   By analyzing the causes of quality accidents of slope engineering, it is discovered some main problems in design, such as probleMabout selection scheme of retaining structure, probleMabout base of design, probleMabout destructive model of slope and calculation method, probleMabout the value of theoretical destructive angle of the rock slope, probleMabout calculation of internal force and combination, and probleMabout treatment of structure and construction. At the same time, these problems in design reveal that a thorough and meticulous analysis needs to be made in design in various aspects, which can avoid some quality accidents due to the improper design. Moreover, this is also very important to reduce the geotechnical engineering disaster. References | Related Articles | Metrics

Select

Fully Dynamic Analysis Method for Seismic Stability of Slope ZHAO Biao ，，CHEN Hong-kai 2011, 30(S1): 580-583.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.019 Abstract ( )   PDF (280KB) ( )   By analyzing the causes of quality accidents of slope engineering, it is discovered some main problems in design, such as probleMabout selection scheme of retaining structure, probleMabout base of design, probleMabout destructive model of slope and calculation method, probleMabout the value of theoretical destructive angle of the rock slope, probleMabout calculation of internal force and combination, and probleMabout treatment of structure and construction. At the same time, these problems in design reveal that a thorough and meticulous analysis needs to be made in design in various aspects, which can avoid some quality accidents due to the improper design. Moreover, this is also very important to reduce the geotechnical engineering disaster. References | Related Articles | Metrics

Select

Critical Slip Surface Search and Application Based on Mutative Scale Chaos Optimization YANG Yang，LI Xie-neng，LIAO Yun-ping，SHI Ling，LIU Rong-can 2011, 30(S1): 584-586.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.020 Abstract ( )   PDF (232KB) ( )   Aiming at the critical slip surface in the slope stability analysis，the mutative scale chaos optimization algorithm will be improved．And the slope stability analysis of non-slice method is combined with chaotic logistic model search；the effective range of internal and external circulation the final slope of the screen to search the global optimal solution critical is resolved，which realizes the project of the slop in the general search for solving the critical slip su~aee． References | Related Articles | Metrics

Select

Critical Slip Surface Search and Application Based on Mutative Scale Chaos Optimization YANG Yang，LI Xie-neng，LIAO Yun-ping，SHI Ling，LIU Rong-can 2011, 30(S1): 584-586.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.020 Abstract ( )   PDF (232KB) ( )   Aiming at the critical slip surface in the slope stability analysis，the mutative scale chaos optimization algorithm will be improved．And the slope stability analysis of non-slice method is combined with chaotic logistic model search；the effective range of internal and external circulation the final slope of the screen to search the global optimal solution critical is resolved，which realizes the project of the slop in the general search for solving the critical slip su~aee． References | Related Articles | Metrics

Select

Application of Residual Pushing Force Curve in Landslide TreatMent Design HU Ming·inn，LIU Guang-hua，HUANG Xia 2011, 30(S1): 587-589.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.021 Abstract ( )   PDF (286KB) ( )   The landslide thrust force is an important element in landslide treatment design．With the landslide residual push- ing force curve，mechanical parameters of landslide can be analyzed in inverse method．According to the different forms of residual pushing force curve，diferent treatment designs were proposed，which can be used in landslide treatment design． The landslide project practice shows that this method is more convenient and intuitiona1． References | Related Articles | Metrics

Select

Application of Residual Pushing Force Curve in Landslide TreatMent Design HU Ming·inn，LIU Guang-hua，HUANG Xia 2011, 30(S1): 587-589.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.021 Abstract ( )   PDF (286KB) ( )   The landslide thrust force is an important element in landslide treatment design．With the landslide residual push- ing force curve，mechanical parameters of landslide can be analyzed in inverse method．According to the different forms of residual pushing force curve，diferent treatment designs were proposed，which can be used in landslide treatment design． The landslide project practice shows that this method is more convenient and intuitiona1． References | Related Articles | Metrics

Select

Evaluation Theory on Landscape Value for National Park(I)： Construction of Index System FANG Yan，TANG Hong-mei，W U Chu，CHEN Hong-kai 2011, 30(S1): 590-596.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.022 Abstract ( )   PDF (472KB) ( )   Through the field investigation，data collection and analysis of the National park，and with the consideration of the social and economic development needs of the regions，the floWchart to establish the evaluation index systeMof scenic land- scape value is designed，according to the corresponding principles．Moreover，indicators on various aspects are selected and scientifically tested；and these indicators are analyzed by organic fusion of qualitative analysis and quantitative analysis．So， the intact evaluation index systeMof scenic landscape value is established．The final step is to establish sound evaluation levels and scoring criteria of the landscape value． References | Related Articles | Metrics

Select

Evaluation Theory on Landscape Value for National Park(I)： Construction of Index System FANG Yan，TANG Hong-mei，W U Chu，CHEN Hong-kai 2011, 30(S1): 590-596.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.022 Abstract ( )   PDF (472KB) ( )   Through the field investigation，data collection and analysis of the National park，and with the consideration of the social and economic development needs of the regions，the floWchart to establish the evaluation index systeMof scenic land- scape value is designed，according to the corresponding principles．Moreover，indicators on various aspects are selected and scientifically tested；and these indicators are analyzed by organic fusion of qualitative analysis and quantitative analysis．So， the intact evaluation index systeMof scenic landscape value is established．The final step is to establish sound evaluation levels and scoring criteria of the landscape value． References | Related Articles | Metrics

Select

Evaluation Theory on Landscape Value for National Park(H)：Evaluation Methodolog FANG Yan，TANG Hong-mei，W U Chu，CHEN Hong-kai 2011, 30(S1): 597-601.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.023 Abstract ( )   PDF (438KB) ( )   Based on the features of the evaluation systeMof landscape value, the evaluation method of landscape value is expounded in detail. The establishment of evaluation methodology is firstly introduced, including the establishment of factor set, the evaluation set and the weight set; and then the evaluation steps are introduced, including a single factor, one-level and multi-level fuzzy comprehensive evaluation of. AHP is adopted to determine the relative weights of different indicators. Based on the theory of fuzzy mathematics, a comprehensive landscape value evaluation model with multi-objective and multilevel fuzzy evaluation is established, with the combination of landscape comprehensive evaluation index method. The theory of fuzzy mathematics is combined with landscape comprehensive evaluation index method, which makes the evaluation results more accurate and reasonable. References | Related Articles | Metrics

Select

Evaluation Theory on Landscape Value for National Park(H)：Evaluation Methodolog FANG Yan，TANG Hong-mei，W U Chu，CHEN Hong-kai 2011, 30(S1): 597-601.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.023 Abstract ( )   PDF (438KB) ( )   Based on the features of the evaluation systeMof landscape value, the evaluation method of landscape value is expounded in detail. The establishment of evaluation methodology is firstly introduced, including the establishment of factor set, the evaluation set and the weight set; and then the evaluation steps are introduced, including a single factor, one-level and multi-level fuzzy comprehensive evaluation of. AHP is adopted to determine the relative weights of different indicators. Based on the theory of fuzzy mathematics, a comprehensive landscape value evaluation model with multi-objective and multilevel fuzzy evaluation is established, with the combination of landscape comprehensive evaluation index method. The theory of fuzzy mathematics is combined with landscape comprehensive evaluation index method, which makes the evaluation results more accurate and reasonable. References | Related Articles | Metrics

Select

Evaluation Theory on Landscape Value for National Park(m)：Application FANG Yan，TANG Hong-mei，W U Chu，CHEN Hong-kai 2011, 30(S1): 602-608.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.024 Abstract ( )   PDF (433KB) ( )   Jinfo Shan National Park in Chongqing is taken as the study area．Through a thorough investigation and extensive literature collection，analysis，the evaluation systeMof landscape value of national park is applied．The evaluation method of land- scape value of national park is based on the combination of AHP and landscape comprehensive index method．In the case study of Jinfo Shan National Park，four principles are taken as the foundation，such as the value of natural landscape，scenic spot and his- toric resort，the unique featured building and folk-custoMand habits． And then 25 correspondingly first level indicators and 77 correspondingly secondary indicators are selected respectively，which are used to have a comprehensive evaluation on the land- scape resources of Jinfo Shan National Park．According to AHP，with the combination of the principle of maximuMdegree of membership，the evaluation resuhs are indicated as excellent ones．The score got by comprehensive evaluation of landscape value index method is 84．61 and the evaluation level is excellent，which are both in consistent with the actual situation． References | Related Articles | Metrics

Select

Evaluation Theory on Landscape Value for National Park(m)：Application FANG Yan，TANG Hong-mei，W U Chu，CHEN Hong-kai 2011, 30(S1): 602-608.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.024 Abstract ( )   PDF (433KB) ( )   Jinfo Shan National Park in Chongqing is taken as the study area．Through a thorough investigation and extensive literature collection，analysis，the evaluation systeMof landscape value of national park is applied．The evaluation method of land- scape value of national park is based on the combination of AHP and landscape comprehensive index method．In the case study of Jinfo Shan National Park，four principles are taken as the foundation，such as the value of natural landscape，scenic spot and his- toric resort，the unique featured building and folk-custoMand habits． And then 25 correspondingly first level indicators and 77 correspondingly secondary indicators are selected respectively，which are used to have a comprehensive evaluation on the land- scape resources of Jinfo Shan National Park．According to AHP，with the combination of the principle of maximuMdegree of membership，the evaluation resuhs are indicated as excellent ones．The score got by comprehensive evaluation of landscape value index method is 84．61 and the evaluation level is excellent，which are both in consistent with the actual situation． References | Related Articles | Metrics

Select

Complex Engineering Geological Problems of Xiang-Huang Tunnel and Its PreventiOn Measure LI Qing-hua，HUANG Yong·ze，LIU Hu-dui 2011, 30(S1): 609-612.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.025 Abstract ( )   PDF (395KB) ( )   Integrated reconnaissance methods are adopted，including high density resistivity method，sonic well logging，the field experiment，the laboratory experiment and SO on to survey the geological engineering conditions in tunnel location．At the same time，possible engineering geological problems in tunnel location are analyzed，such as gushing，water-bursting in tunnel，burst mud and subsidence in tunnel，goaf hydrops in coal bed，gas leakage etc．Based on the analysis of these problems， the prevention measures are brought out to provide important theoretical and technical basis for the design and con- struction for Xiang-Huang tunne1． References | Related Articles | Metrics

Select

Complex Engineering Geological Problems of Xiang-Huang Tunnel and Its PreventiOn Measure LI Qing-hua，HUANG Yong·ze，LIU Hu-dui 2011, 30(S1): 609-612.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.025 Abstract ( )   PDF (395KB) ( )   Integrated reconnaissance methods are adopted，including high density resistivity method，sonic well logging，the field experiment，the laboratory experiment and SO on to survey the geological engineering conditions in tunnel location．At the same time，possible engineering geological problems in tunnel location are analyzed，such as gushing，water-bursting in tunnel，burst mud and subsidence in tunnel，goaf hydrops in coal bed，gas leakage etc．Based on the analysis of these problems， the prevention measures are brought out to provide important theoretical and technical basis for the design and con- struction for Xiang-Huang tunne1． References | Related Articles | Metrics

Select

Security AlarMSysteMDealing with Paroxysmal Collapse of Perilous Rock ZHAO Xian-tao，TANG Lan，XIANG Jie，HU Ting，DENG Shah-shan，YAN Hui， CHEN Dong-mei，XIONG Li·yong 2011, 30(S1): 613-618.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.026 Abstract ( )   PDF (464KB) ( )   The security alarMsysteMtakes fracture mechanics as theoretical guidance．The stability analysis method of fracture mechanics based on the limit equilibriuMtheory is different froMthe former proposed stability analysis．Thus，the 3 D stress collector and the security alarMsysteMdealing with paroxysmal collapse of perilous rock are developed and re- searched．The alarMsysteMconsists of 3 D stress collector，lineate information processor and warning LCD．The 3 D stress collector is different with ordinary stress collector，which is able to collect different depths and locations of stresses in rocks， that is to say the 3D stresses existing in the paroxysmal collapse． Then the maximuMshear stress and press stress chosen froMthe 3D stresses are convened into the maximuMshear stress and tension stress existing in master structure surface．The switched stresses are finally the~undation information of measuring the stability of rocks．Through the established calcula- tion model，the stability coefi cients of perilous rock are obtained and the systeMautomatically estimates the stability state of paroxysmal collapse．The security alarMsysteMtransfers the judging outcome information by wired．The whole warning sys- teMis employing red，yellow，blue，green guiding lamps and whistle signal that shoWdifferent states of paroxysmal collapse warns to activators in dangerous areas． References | Related Articles | Metrics

Select

Security AlarMSysteMDealing with Paroxysmal Collapse of Perilous Rock ZHAO Xian-tao，TANG Lan，XIANG Jie，HU Ting，DENG Shah-shan，YAN Hui， CHEN Dong-mei，XIONG Li·yong 2011, 30(S1): 613-618.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.026 Abstract ( )   PDF (464KB) ( )   The security alarMsysteMtakes fracture mechanics as theoretical guidance．The stability analysis method of fracture mechanics based on the limit equilibriuMtheory is different froMthe former proposed stability analysis．Thus，the 3 D stress collector and the security alarMsysteMdealing with paroxysmal collapse of perilous rock are developed and re- searched．The alarMsysteMconsists of 3 D stress collector，lineate information processor and warning LCD．The 3 D stress collector is different with ordinary stress collector，which is able to collect different depths and locations of stresses in rocks， that is to say the 3D stresses existing in the paroxysmal collapse． Then the maximuMshear stress and press stress chosen froMthe 3D stresses are convened into the maximuMshear stress and tension stress existing in master structure surface．The switched stresses are finally the~undation information of measuring the stability of rocks．Through the established calcula- tion model，the stability coefi cients of perilous rock are obtained and the systeMautomatically estimates the stability state of paroxysmal collapse．The security alarMsysteMtransfers the judging outcome information by wired．The whole warning sys- teMis employing red，yellow，blue，green guiding lamps and whistle signal that shoWdifferent states of paroxysmal collapse warns to activators in dangerous areas． References | Related Articles | Metrics

Select

Countermeasures of Preventing and Curing Geological Calamity of Mountainous Region in Chongqing LIAO Yun-ping，LI De-wan，CHEN Si 2011, 30(S1): 619-623.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.027 Abstract ( )   PDF (385KB) ( )   The factors of the mountainous region geology disasters are firstly discussed．And then through the analysis on ge- ology disaster history and the present situation，the predominant type and the harm，the production environment and distri- bution regular in Chongqing mountainous region，it is thought that the terrain slope，the ground elevation diference and the gneiss engineering geology type are the main factors which affect the landslide．The active break is the main influence factor of the mud-rock floWproduction．The neWtectonic movement type and the intensity are the serial factors of the Chongqing landslide and the mud·rock floWactivity． Finally，the preventing and controlling measures are proposed and discussed， which has certain instruction significance to the preventing and controlling measures of geology disaster in Chongqing moun- tainous region． References | Related Articles | Metrics

Select

Countermeasures of Preventing and Curing Geological Calamity of Mountainous Region in Chongqing LIAO Yun-ping，LI De-wan，CHEN Si 2011, 30(S1): 619-623.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.027 Abstract ( )   PDF (385KB) ( )   The factors of the mountainous region geology disasters are firstly discussed．And then through the analysis on ge- ology disaster history and the present situation，the predominant type and the harm，the production environment and distri- bution regular in Chongqing mountainous region，it is thought that the terrain slope，the ground elevation diference and the gneiss engineering geology type are the main factors which affect the landslide．The active break is the main influence factor of the mud-rock floWproduction．The neWtectonic movement type and the intensity are the serial factors of the Chongqing landslide and the mud·rock floWactivity． Finally，the preventing and controlling measures are proposed and discussed， which has certain instruction significance to the preventing and controlling measures of geology disaster in Chongqing moun- tainous region． References | Related Articles | Metrics

Select

Stability Variation Characteristics of Liangshuijing Landslide During the Three Gorges Reservoir Running TAN Ling 2011, 30(S1): 624-628.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.028 Abstract ( )   PDF (386KB) ( )   Liangshuijing landslide is an old style resurrection-type soil landslide which is large and deep because of the factors of water level change, terrain features and so on. Based on the basic geology conditions of the landslide, the transfer coefficient method was used to evaluate the stability of the landslide after the Three Gorges Reservoir running and an experiment was made to study the impact of water content on stability. The results shoWthat when the Three Gorges Reservoir is running, the stability of landslide is related to the range of sliding body flooded. The stabilities of the landslide change between 1. 014 and 0. 996 when the water level rises or falls at a rate of lm/d between 175Mto 145Mwhich is in a state of most unsteady. At the same time, the shear strength of structure of rock and soil gets nonlinearly lowered as the Three Gorges Reservoir running enlarges the adverse effects on slope stability. References | Related Articles | Metrics

Select

Stability Variation Characteristics of Liangshuijing Landslide During the Three Gorges Reservoir Running TAN Ling 2011, 30(S1): 624-628.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.028 Abstract ( )   PDF (386KB) ( )   Liangshuijing landslide is an old style resurrection-type soil landslide which is large and deep because of the factors of water level change, terrain features and so on. Based on the basic geology conditions of the landslide, the transfer coefficient method was used to evaluate the stability of the landslide after the Three Gorges Reservoir running and an experiment was made to study the impact of water content on stability. The results shoWthat when the Three Gorges Reservoir is running, the stability of landslide is related to the range of sliding body flooded. The stabilities of the landslide change between 1. 014 and 0. 996 when the water level rises or falls at a rate of lm/d between 175Mto 145Mwhich is in a state of most unsteady. At the same time, the shear strength of structure of rock and soil gets nonlinearly lowered as the Three Gorges Reservoir running enlarges the adverse effects on slope stability. References | Related Articles | Metrics

Select

Efect of Waterlevel Fall Settlement on Vertically Loaded Single Pile WANG Xiao-yan，HE Li-jun，WANG Min 2011, 30(S1): 629-633.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.029 Abstract ( )   PDF (315KB) ( )   Abstract：The working behavior of single pile with verical load in subsidence area during groundwater recession was studied through theoretical analysis．Based on the single-phase floWhypothesis and the Bishop unsaturated effective stress principle，a mathematical model which could reflect the settlement in both saturated zone and unsaturated zone was established incorporating the linear soil and water characteristic curve．Assuming that the load transfer function was ideal elastic-plastic for the pile- soil interface，shear strength of which increasing with depth，and hyperbolic model for pile endpoint，then，Q-Scurves，side friction stress along the pile were analyzed according to the shear displacement method during waterlevel fal1 References | Related Articles | Metrics

Select

Efect of Waterlevel Fall Settlement on Vertically Loaded Single Pile WANG Xiao-yan，HE Li-jun，WANG Min 2011, 30(S1): 629-633.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.029 Abstract ( )   PDF (315KB) ( )   Abstract：The working behavior of single pile with verical load in subsidence area during groundwater recession was studied through theoretical analysis．Based on the single-phase floWhypothesis and the Bishop unsaturated effective stress principle，a mathematical model which could reflect the settlement in both saturated zone and unsaturated zone was established incorporating the linear soil and water characteristic curve．Assuming that the load transfer function was ideal elastic-plastic for the pile- soil interface，shear strength of which increasing with depth，and hyperbolic model for pile endpoint，then，Q-Scurves，side friction stress along the pile were analyzed according to the shear displacement method during waterlevel fal1 References | Related Articles | Metrics

Select

Prediction on Mine Water InfloWin Zhuzong Coal Mine ZHANG Xing-inn， ，ZHOU Tao， ，ZHOU Kang hui， 2011, 30(S1): 634-638.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.030 Abstract ( )   PDF (390KB) ( )   Mine water infloWis always a serious probleMrelated to the safety of coal mine operation．An accurate evaluation of the amount of mine water infloWis not only the important index to mine safety but also the primary basis to ensure the drainage capacity and methods．The mathematical models were established based on knowing the hydrogeological condition， space structure of the water bearing mediuMand water filling factors．The result of big-well method was chosen as the mine water infloWof Zhuzong coal mine by comparison between the two calculation methods． References | Related Articles | Metrics

Select

Prediction on Mine Water InfloWin Zhuzong Coal Mine ZHANG Xing-inn， ，ZHOU Tao， ，ZHOU Kang hui， 2011, 30(S1): 634-638.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.030 Abstract ( )   PDF (390KB) ( )   Mine water infloWis always a serious probleMrelated to the safety of coal mine operation．An accurate evaluation of the amount of mine water infloWis not only the important index to mine safety but also the primary basis to ensure the drainage capacity and methods．The mathematical models were established based on knowing the hydrogeological condition， space structure of the water bearing mediuMand water filling factors．The result of big-well method was chosen as the mine water infloWof Zhuzong coal mine by comparison between the two calculation methods． References | Related Articles | Metrics

Select

Application of Information Method in Complex Landslide Investigation LV Tao．LIU Xiang-you 2011, 30(S1): 639-641.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.031 Abstract ( )   PDF (290KB) ( )   By analyzing the cause of errors in complex landslide investigation，the method of establishing dynamic engineering geological model of the complex landslide is proposed on the basis of the information method．Due to this model，errors and mistakes in complex landslide investigation can be reduced and the investigation accuracy can be improved，which is in favor of a better prevention and reduction against the disaster． References | Related Articles | Metrics

Select

Application of Information Method in Complex Landslide Investigation LV Tao．LIU Xiang-you 2011, 30(S1): 639-641.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.031 Abstract ( )   PDF (290KB) ( )   By analyzing the cause of errors in complex landslide investigation，the method of establishing dynamic engineering geological model of the complex landslide is proposed on the basis of the information method．Due to this model，errors and mistakes in complex landslide investigation can be reduced and the investigation accuracy can be improved，which is in favor of a better prevention and reduction against the disaster． References | Related Articles | Metrics

Select

Stability Analysis and Regulation of the Landslide in Tiantuo to Nujiang Section on Sichuan-Tibet Highway SHEN Deng-ke，CHEN Hong·kai 2011, 30(S1): 642-646.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.032 Abstract ( )   PDF (632KB) ( )   With a combination of basic conditions for the landslide in section froMTiantuo to Nujiang on Sichuan．Tibet State Road 3 1 8，that is K3668+700 ～K3668+790，the causes of the landslide have been analyzed．The finite element analysis model of the landslide in K3668 +7 15 section is established．The stability of the landslide in gravitational field and earth- quake has been analyzed by using the finite element strength reduction method．The calculation indicates that the safety CO- efficients of the landslide in gravitational field and earthquake respectively are 0．99 and 0．93 respectively before regulation． So the landslide is in an unstable state and the regulation project should be taken in time．Advisable regulation scheme of the landslide is put forward and the results shoWthat the stability safety coeficients are greater than the design ones after the regulation References | Related Articles | Metrics

Select

Stability Analysis and Regulation of the Landslide in Tiantuo to Nujiang Section on Sichuan-Tibet Highway SHEN Deng-ke，CHEN Hong·kai 2011, 30(S1): 642-646.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.032 Abstract ( )   PDF (632KB) ( )   With a combination of basic conditions for the landslide in section froMTiantuo to Nujiang on Sichuan．Tibet State Road 3 1 8，that is K3668+700 ～K3668+790，the causes of the landslide have been analyzed．The finite element analysis model of the landslide in K3668 +7 15 section is established．The stability of the landslide in gravitational field and earth- quake has been analyzed by using the finite element strength reduction method．The calculation indicates that the safety CO- efficients of the landslide in gravitational field and earthquake respectively are 0．99 and 0．93 respectively before regulation． So the landslide is in an unstable state and the regulation project should be taken in time．Advisable regulation scheme of the landslide is put forward and the results shoWthat the stability safety coeficients are greater than the design ones after the regulation References | Related Articles | Metrics

Select

Analysis of Roof Deformation Characteristics and MechanisMin Horizontal Layer Rock Tunnel YAN Yong．jie，WENG Qi．neng ，wU Bing-qi ，TIAN Wei-ming 2011, 30(S1): 647-649.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.033 Abstract ( )   PDF (261KB) ( )   The tunnel is often being tunneled through horizontal layer surrounding rock in process；which will bring great diffieulties in the tunnel construction，causing accidents．Through the analysis of roof deformation characteristics and mechanisMin hori- zontal layer rock tunnel，this paper concludes that the horizontal layer surrounding rock tunnel near roof level sync due to weak produced separation，bending settlement~rmed delamination．Levels between layers alternate with hard and soft rock strata and unbond force is poor，and the stability of surounding rock tunnel excavation vault is poor．After tunneling，it’S more likely to in- crease vaults’instability．For horizontal layer surrounding areas，we must complete collapse prevention and early treatment，and prevention is the main part．When the accident happens，proper measures should be done to reduce personnel casualties References | Related Articles | Metrics

Select

Analysis of Roof Deformation Characteristics and MechanisMin Horizontal Layer Rock Tunnel YAN Yong．jie，WENG Qi．neng ，wU Bing-qi ，TIAN Wei-ming 2011, 30(S1): 647-649.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.033 Abstract ( )   PDF (261KB) ( )   The tunnel is often being tunneled through horizontal layer surrounding rock in process；which will bring great diffieulties in the tunnel construction，causing accidents．Through the analysis of roof deformation characteristics and mechanisMin hori- zontal layer rock tunnel，this paper concludes that the horizontal layer surrounding rock tunnel near roof level sync due to weak produced separation，bending settlement~rmed delamination．Levels between layers alternate with hard and soft rock strata and unbond force is poor，and the stability of surounding rock tunnel excavation vault is poor．After tunneling，it’S more likely to in- crease vaults’instability．For horizontal layer surrounding areas，we must complete collapse prevention and early treatment，and prevention is the main part．When the accident happens，proper measures should be done to reduce personnel casualties References | Related Articles | Metrics

Select

Application of AHP in the Stability Evaluation of Perilous Rock： A Case Study of Old and Perilous Rock in Yubei District in Chongqing 0U W u-tao，W ANG W ei 2011, 30(S1): 650-651.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.034 Abstract ( )   PDF (209KB) ( )   It’s the important task to make sure the stabihty of the perilous rock，which determines whether the countermeasures to perilous rock are carried out．At the same time，the identification of the stability of the perilous rock is the prerequi- site for the quantitative calculation．The comprehensive index method based on AHP is adopted，to carry out the comprehen- sive stability evaluation of the old and perilous rocks and corresponding monomer in Yubei district，which is aiming to pro- vide reliable evidences for the countermeasures of perilous rocks in this area． References | Related Articles | Metrics

Select

Application of AHP in the Stability Evaluation of Perilous Rock： A Case Study of Old and Perilous Rock in Yubei District in Chongqing 0U W u-tao，W ANG W ei 2011, 30(S1): 650-651.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.034 Abstract ( )   PDF (209KB) ( )   It’s the important task to make sure the stabihty of the perilous rock，which determines whether the countermeasures to perilous rock are carried out．At the same time，the identification of the stability of the perilous rock is the prerequi- site for the quantitative calculation．The comprehensive index method based on AHP is adopted，to carry out the comprehen- sive stability evaluation of the old and perilous rocks and corresponding monomer in Yubei district，which is aiming to pro- vide reliable evidences for the countermeasures of perilous rocks in this area． References | Related Articles | Metrics

Select

Investigation on Rationality of High-Filled Embankment’S Settings on Expressway in Mountainous Areas XU You·fei，LIU Jun 2011, 30(S1): 652-654.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.035 Abstract ( )   PDF (219KB) ( )   Abstract：Based on the Longing groove bridge’S changing for high-filled embankment in the Jiang-He freeway D7 contract seetion，the advantages such as using waste，and reducing space etc．are discussed，and the problems such as the large a- mount of post-construction settlement，slope stability and high expense of the high-filled embankment’S setting are also dis- cussed．This study provides the reference for similar road References | Related Articles | Metrics

Select

Investigation on Rationality of High-Filled Embankment’S Settings on Expressway in Mountainous Areas XU You·fei，LIU Jun 2011, 30(S1): 652-654.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.035 Abstract ( )   PDF (219KB) ( )   Abstract：Based on the Longing groove bridge’S changing for high-filled embankment in the Jiang-He freeway D7 contract seetion，the advantages such as using waste，and reducing space etc．are discussed，and the problems such as the large a- mount of post-construction settlement，slope stability and high expense of the high-filled embankment’S setting are also dis- cussed．This study provides the reference for similar road References | Related Articles | Metrics

Select

Application of Sensitivity Analysis in Selecting Mechanical Parameters of Landslide HUANG Xia，TAN Peng-Yan 2011, 30(S1): 655-657.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.036 Abstract ( )   PDF (229KB) ( )   Due to the variation of rocks。it is important to choose the landslide mechanical parameters accurately and have a sensitivity analysis on mechanical parameters．A case study of the landslide around the previous government office in Huan- gxi Town in Chongqing is carried out．In the case study，the influence factors are found out according to the parameters sen- sitivity analysis；and then synthesize the indoor and outdoor experimental data as well as the results of parameters inverse calculation，the reasonable landslide mechanical parameters are selected by using“integrated method of parameters value”． The practice has proved that this method has a good practical value in engineering． References | Related Articles | Metrics

Select

Application of Sensitivity Analysis in Selecting Mechanical Parameters of Landslide HUANG Xia，TAN Peng-Yan 2011, 30(S1): 655-657.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.036 Abstract ( )   PDF (229KB) ( )   Due to the variation of rocks。it is important to choose the landslide mechanical parameters accurately and have a sensitivity analysis on mechanical parameters．A case study of the landslide around the previous government office in Huan- gxi Town in Chongqing is carried out．In the case study，the influence factors are found out according to the parameters sen- sitivity analysis；and then synthesize the indoor and outdoor experimental data as well as the results of parameters inverse calculation，the reasonable landslide mechanical parameters are selected by using“integrated method of parameters value”． The practice has proved that this method has a good practical value in engineering． References | Related Articles | Metrics

Select

Analysis of Formation MechanisMand Control Measures of One Debris FloWin Chongqing LU Bing-qing’LU Bing-qing’ ， DAI Yan-ke ，XU Pei-hua， ’ ，HAN Han’ ， LU Bing．Ke ， DAI Yan-ke ，XU Pei-hua ’ ，HAN Han’ ， LU Bing．Ke 2011, 30(S1): 658-661.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.037 Abstract ( )   PDF (272KB) ( )   Therefore，one debris floWwhich happens on the campus of Chongqing College of Arts and Sciences is taken as an example to analyze the formation mechanisMof debris flow，according to territorial environment geology，hydrology and engi- neering geology conditions．This analysis is considered as one part of“distribution characteristics of debris floWand its pre- vention measures in Chongqing”project．The debris floWcharacteristics in different zones are investigated at first．Then the formation mechanisMof debris floWis analyzed．Finally，the countermeasures against the debris floWare discussed，which provides the reference for the prevention and control of the debris floWin similar territorial conditions． References | Related Articles | Metrics

Select

Analysis of Formation MechanisMand Control Measures of One Debris FloWin Chongqing LU Bing-qing’LU Bing-qing’ ， DAI Yan-ke ，XU Pei-hua， ’ ，HAN Han’ ， LU Bing．Ke ， DAI Yan-ke ，XU Pei-hua ’ ，HAN Han’ ， LU Bing．Ke 2011, 30(S1): 658-661.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.037 Abstract ( )   PDF (272KB) ( )   Therefore，one debris floWwhich happens on the campus of Chongqing College of Arts and Sciences is taken as an example to analyze the formation mechanisMof debris flow，according to territorial environment geology，hydrology and engi- neering geology conditions．This analysis is considered as one part of“distribution characteristics of debris floWand its pre- vention measures in Chongqing”project．The debris floWcharacteristics in different zones are investigated at first．Then the formation mechanisMof debris floWis analyzed．Finally，the countermeasures against the debris floWare discussed，which provides the reference for the prevention and control of the debris floWin similar territorial conditions． References | Related Articles | Metrics

Select

Failure MechanisMand Countermeasures to Prevent and Control Mountainous ShalloWDeformation Slope in Chongqing YANG Shu-bao，REN Hong-ling 2011, 30(S1): 662-664.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.038 Abstract ( )   PDF (226KB) ( )   Through the analysis of the geological background and basic characteristics of unstable slopes in Chongqing E-ling Park，the failure mechanisMand countermeasures to prevent and control mountainous shalloWdeformation are summed up． The proposed analysis indicates that the failure model of this kind of deformation slope is the slippery of surface soil，and the rainfall is external factor for the failure of deformation slope． References | Related Articles | Metrics

Select

Failure MechanisMand Countermeasures to Prevent and Control Mountainous ShalloWDeformation Slope in Chongqing YANG Shu-bao，REN Hong-ling 2011, 30(S1): 662-664.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.038 Abstract ( )   PDF (226KB) ( )   Through the analysis of the geological background and basic characteristics of unstable slopes in Chongqing E-ling Park，the failure mechanisMand countermeasures to prevent and control mountainous shalloWdeformation are summed up． The proposed analysis indicates that the failure model of this kind of deformation slope is the slippery of surface soil，and the rainfall is external factor for the failure of deformation slope． References | Related Articles | Metrics

Select

Formation MechanisMand Treatment Measure of HuangcaOshan Crags on Chongqing-Fulin Highway XIONG Chao ，YUAN Xing．ping ，LIU Guang．hua ，TANG Hong．mei 2011, 30(S1): 665-669.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.039 Abstract ( )   PDF (380KB) ( )   Huangcaoshan crags in Chongqing-Fulin highway was taken as an example． Its geological environment and geomorphological characteristics of geological hazards were expouned and the formation mechanisMwas analyzed．The chain rule including macro and micro level of crags development，was concluded．The crags were divided into two types of group and monomer to analyze the main factors and processes impact the crags formation．Finite difference method of FLAC was used to study the development trend of deformation at the cavity and the upper part of roekmass．The result shows that the reason of crags’formation is mainly that the tension on the top of crags in the process of rock cavity formation induces unloading cracks zone which thereby promotes possibility of the tension damage collapse in crags．An control prograM，which including slope su~ace cleaning，active protection systems，slope lattice flame anchoring，shotcrete closing，stone masonry support and drainage engineering，was dreWup References | Related Articles | Metrics

Select

Formation MechanisMand Treatment Measure of HuangcaOshan Crags on Chongqing-Fulin Highway XIONG Chao ，YUAN Xing．ping ，LIU Guang．hua ，TANG Hong．mei 2011, 30(S1): 665-669.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.039 Abstract ( )   PDF (380KB) ( )   Huangcaoshan crags in Chongqing-Fulin highway was taken as an example． Its geological environment and geomorphological characteristics of geological hazards were expouned and the formation mechanisMwas analyzed．The chain rule including macro and micro level of crags development，was concluded．The crags were divided into two types of group and monomer to analyze the main factors and processes impact the crags formation．Finite difference method of FLAC was used to study the development trend of deformation at the cavity and the upper part of roekmass．The result shows that the reason of crags’formation is mainly that the tension on the top of crags in the process of rock cavity formation induces unloading cracks zone which thereby promotes possibility of the tension damage collapse in crags．An control prograM，which including slope su~ace cleaning，active protection systems，slope lattice flame anchoring，shotcrete closing，stone masonry support and drainage engineering，was dreWup References | Related Articles | Metrics

Select

Treatment Measures of Soil Steep Slopes at the Head of Jiulongyan Reservoir in Youyang County TAN Peng-yah ，HUANG Xia ，LI Si．yuan 2011, 30(S1): 670-672.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.040 Abstract ( )   PDF (220KB) ( )   The soil steep slopes at the head of Jiulongyan Reservoir in Youyang County are studied．It is significant for the construction of Jiulongyan Reservoir to consider the project stability，influence factors and treat measures with the considera- tion of soil pore water’s weakening effect．At the same time，this proposal is also significant to study the construction of wa- ter conservancy caused by the rise of the reservoir water． References | Related Articles | Metrics

Select

Treatment Measures of Soil Steep Slopes at the Head of Jiulongyan Reservoir in Youyang County TAN Peng-yah ，HUANG Xia ，LI Si．yuan 2011, 30(S1): 670-672.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.040 Abstract ( )   PDF (220KB) ( )   The soil steep slopes at the head of Jiulongyan Reservoir in Youyang County are studied．It is significant for the construction of Jiulongyan Reservoir to consider the project stability，influence factors and treat measures with the considera- tion of soil pore water’s weakening effect．At the same time，this proposal is also significant to study the construction of wa- ter conservancy caused by the rise of the reservoir water． References | Related Articles | Metrics

Select

Application of Grouting Micro-Pile Group in the Treatment of Perilous Rock YANG Guang，TANG Hong-mei 2011, 30(S1): 673-677.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.041 Abstract ( )   PDF (339KB) ( )   Abstract：Based on the grouting micro-pile group combined with support in the calculation of the stability of perilous rock， the number of micro-pile group and the body size of supporting are ensured．To examine the reliability of the scheme froMa macro-perspective，the displacement of the end of the pile should be calibrated．Finally，it is showed in the case study that the grouting micro-pile group and the suppo~joint micro-control technology in the management of the perilous rock are feasi- ble． References | Related Articles | Metrics

Select

Application of Grouting Micro-Pile Group in the Treatment of Perilous Rock YANG Guang，TANG Hong-mei 2011, 30(S1): 673-677.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.041 Abstract ( )   PDF (339KB) ( )   Abstract：Based on the grouting micro-pile group combined with support in the calculation of the stability of perilous rock， the number of micro-pile group and the body size of supporting are ensured．To examine the reliability of the scheme froMa macro-perspective，the displacement of the end of the pile should be calibrated．Finally，it is showed in the case study that the grouting micro-pile group and the suppo~joint micro-control technology in the management of the perilous rock are feasi- ble． References | Related Articles | Metrics

Select

Application of Anchoring Technology in Retaining Wall Design ZHU Lin ，YUAN Xing-ping 2011, 30(S1): 678-681.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.042 Abstract ( )   PDF (239KB) ( )   Retaining wall is one of commonly used side slope supporting structure in the construction engineering，which including many types as masonry retaining wall，reinforced concrete retaining wall，anchored retaining wall，cantilever retai- ning wall，counterfort retaining wall，tied retaining wall，sheet-pile wall and SO on．The anchored retaining wall has obtained full-blown experience in design and construction． Based on the anchor mechanisM，several application methods of anchor technology in retaining wall design were introduced by the project exampl References | Related Articles | Metrics

Select

Application of Anchoring Technology in Retaining Wall Design ZHU Lin ，YUAN Xing-ping 2011, 30(S1): 678-681.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.042 Abstract ( )   PDF (239KB) ( )   Retaining wall is one of commonly used side slope supporting structure in the construction engineering，which including many types as masonry retaining wall，reinforced concrete retaining wall，anchored retaining wall，cantilever retai- ning wall，counterfort retaining wall，tied retaining wall，sheet-pile wall and SO on．The anchored retaining wall has obtained full-blown experience in design and construction． Based on the anchor mechanisM，several application methods of anchor technology in retaining wall design were introduced by the project exampl References | Related Articles | Metrics

Select

Control Project of Guandimiao Landslide in Yuzhong Area of Chongqing REN Hong-ling，OU W u-tao 2011, 30(S1): 682-685.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.043 Abstract ( )   PDF (271KB) ( )   Guandi Temple landslide is a medium-sticky thrust load caused one．Based on the study of the characteristics，the major trigger factors and the stability，finally the control project including the resistance pile project and the upper draining project was chosen by aiming at the instability characteristics and the protection target of the landslide after control project selection．The control project could ensure the stability of this landslide and the construction safety of Guandi Temple． References | Related Articles | Metrics

Select

Control Project of Guandimiao Landslide in Yuzhong Area of Chongqing REN Hong-ling，OU W u-tao 2011, 30(S1): 682-685.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.043 Abstract ( )   PDF (271KB) ( )   Guandi Temple landslide is a medium-sticky thrust load caused one．Based on the study of the characteristics，the major trigger factors and the stability，finally the control project including the resistance pile project and the upper draining project was chosen by aiming at the instability characteristics and the protection target of the landslide after control project selection．The control project could ensure the stability of this landslide and the construction safety of Guandi Temple． References | Related Articles | Metrics

Select

Gully InforMation Entropy along the Deda·-Bogexi of Sichuan--Tibet H ighway ZHANG Qiang，CHEN Hong-kai 2011, 30(S1): 686-690.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.044 Abstract ( )   PDF (361KB) ( )   Gullies along the Deda-Bogexi of Sichuan-Tibet Highway are analyzed by using the information entropy theory． The results shoWthat 87．23％ of gullies are in the period of childhood and adolescent．which can easily occur debris floWin certain intensity storm．This method can be used to judge the growing period of gullies whose drainage area less than 2km and elevation less than 1 kMwith a certain degree of accuracy and objectivity．At the same time，it can prove that the evolu- lion process of landscape systeMdoesn’t have consistency in the same region by using information entropy． References | Related Articles | Metrics

Select

Gully InforMation Entropy along the Deda·-Bogexi of Sichuan--Tibet H ighway ZHANG Qiang，CHEN Hong-kai 2011, 30(S1): 686-690.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.044 Abstract ( )   PDF (361KB) ( )   Gullies along the Deda-Bogexi of Sichuan-Tibet Highway are analyzed by using the information entropy theory． The results shoWthat 87．23％ of gullies are in the period of childhood and adolescent．which can easily occur debris floWin certain intensity storm．This method can be used to judge the growing period of gullies whose drainage area less than 2km and elevation less than 1 kMwith a certain degree of accuracy and objectivity．At the same time，it can prove that the evolu- lion process of landscape systeMdoesn’t have consistency in the same region by using information entropy． References | Related Articles | Metrics

Select

Flexible Arch Bridge with Steel Truss Design ZHENG Hui 2011, 30(S1): 691-692.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.045 Abstract ( )   PDF (191KB) ( )   Hening high speed railway super major bridge is a flexible arch bridge with steel truss beam．It has three spans (1 14．75+229．5+1 14．75)m，the main span is the longest in the same style bridge in China．Structure construction，con- ponent design and steel gieder installation method of the main bridge are introduced References | Related Articles | Metrics

Select

Flexible Arch Bridge with Steel Truss Design ZHENG Hui 2011, 30(S1): 691-692.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.045 Abstract ( )   PDF (191KB) ( )   Hening high speed railway super major bridge is a flexible arch bridge with steel truss beam．It has three spans (1 14．75+229．5+1 14．75)m，the main span is the longest in the same style bridge in China．Structure construction，con- ponent design and steel gieder installation method of the main bridge are introduced References | Related Articles | Metrics

Select

Research on the Bedding High Rock Slope Treatment of Yubei Agricultural Zone West 1 Street Road ZHANG Gui-tong 2011, 30(S1): 693-696.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.046 Abstract ( )   PDF (311KB) ( )   Southwest China has difficult mountainous terrain，and complex geological conditions．During the process of railway，highway，municipal construction and other projects，bedding cut slope is a common geological diseases，and landslide prone handled properly．Based on the agricultural park along the road cut slope control design，bedding cut slope on failure mode and shear strength and length of sliding are discussed．And through many years of governance after the completion of the test project，the design is proved to have good governance results．Similar governance bedding cut slope has some useful referenee value． References | Related Articles | Metrics

Select

Research on the Bedding High Rock Slope Treatment of Yubei Agricultural Zone West 1 Street Road ZHANG Gui-tong 2011, 30(S1): 693-696.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.046 Abstract ( )   PDF (311KB) ( )   Southwest China has difficult mountainous terrain，and complex geological conditions．During the process of railway，highway，municipal construction and other projects，bedding cut slope is a common geological diseases，and landslide prone handled properly．Based on the agricultural park along the road cut slope control design，bedding cut slope on failure mode and shear strength and length of sliding are discussed．And through many years of governance after the completion of the test project，the design is proved to have good governance results．Similar governance bedding cut slope has some useful referenee value． References | Related Articles | Metrics

Select

The IMpact of Covered Karst in the Engineering Construction ZENG Yu ，YANG Zhen．xian ，ZHANG Na 2011, 30(S1): 697-699.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.047 Abstract ( )   PDF (228KB) ( )   Karst in China has quite great span in geographical distribution or climatic zone，or formation time，and different karst areas have different features． So different treatment measures should be used in different engineering constructions． These factors，such as the growth features of karst，two kinds of basic collapse models，three collapse mechanisms，the in- fluence of foundation stability，and the~undation treatment measures，are analyzed in covered karst terrain．It can provide a reference for construction in covered karst terrain． References | Related Articles | Metrics

Select

The IMpact of Covered Karst in the Engineering Construction ZENG Yu ，YANG Zhen．xian ，ZHANG Na 2011, 30(S1): 697-699.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.047 Abstract ( )   PDF (228KB) ( )   Karst in China has quite great span in geographical distribution or climatic zone，or formation time，and different karst areas have different features． So different treatment measures should be used in different engineering constructions． These factors，such as the growth features of karst，two kinds of basic collapse models，three collapse mechanisms，the in- fluence of foundation stability，and the~undation treatment measures，are analyzed in covered karst terrain．It can provide a reference for construction in covered karst terrain． References | Related Articles | Metrics

Select

Failure MechanisMStudy for Fairy-River Shore Slope in the Three Gorges Reservoir Caused by Water-Impoundmen XIANG Jie，TANG Hong-mei 2011, 30(S1): 700-704.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.048 Abstract ( )   PDF (427KB) ( )   Based on the pre-study of the related research，the failure mechanisMfor Fariy·River shore slope which is located in Fairy-River scenic area of sorcery mountain is analyzed，because of the water level’S change between the Three Gorges Reservoir retains water front and back．It is key part to prevent and cure a database shore slippery ascent by analyzing the formation mechanisM’S break．All the same，simple statement the calculation method about the slop’S stability analysis un- der the water level change situation ． What’S more，it is required to discuss the shore slope cause of second-class slope， and some prevention and cure counterplots are put forward． References | Related Articles | Metrics

Select

Failure MechanisMStudy for Fairy-River Shore Slope in the Three Gorges Reservoir Caused by Water-Impoundmen XIANG Jie，TANG Hong-mei 2011, 30(S1): 700-704.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.048 Abstract ( )   PDF (427KB) ( )   Based on the pre-study of the related research，the failure mechanisMfor Fariy·River shore slope which is located in Fairy-River scenic area of sorcery mountain is analyzed，because of the water level’S change between the Three Gorges Reservoir retains water front and back．It is key part to prevent and cure a database shore slippery ascent by analyzing the formation mechanisM’S break．All the same，simple statement the calculation method about the slop’S stability analysis un- der the water level change situation ． What’S more，it is required to discuss the shore slope cause of second-class slope， and some prevention and cure counterplots are put forward． References | Related Articles | Metrics

Select

Status Analysis and Countermeasures for Risk Elimination and ReinforceMent of Yugang Reservoir W EI Shuang 2011, 30(S1): 705-708.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.049 Abstract ( )   PDF (310KB) ( )   Based on existing problems of small dilapidated reservoirs，the present condition of Yugang Reservoir is analyzed and the problems are also discussed．The suggestions in 4 aspects are proposed to reinforce the daM，including heightening daMto enhance flood control standard，revetment the daMto enhance waves standard，construction the neWsluice and maintenance water conveying tunnel to reinforcement the daM，which can eliminate the hidden safe trouble and ensure the safety of dam． The problems may meet in the construction are also discussed References | Related Articles | Metrics

Select

Status Analysis and Countermeasures for Risk Elimination and ReinforceMent of Yugang Reservoir W EI Shuang 2011, 30(S1): 705-708.  DOI: 10.3969/j.issn.1674-0696.2011.supp1.049 Abstract ( )   PDF (310KB) ( )   Based on existing problems of small dilapidated reservoirs，the present condition of Yugang Reservoir is analyzed and the problems are also discussed．The suggestions in 4 aspects are proposed to reinforce the daM，including heightening daMto enhance flood control standard，revetment the daMto enhance waves standard，construction the neWsluice and maintenance water conveying tunnel to reinforcement the daM，which can eliminate the hidden safe trouble and ensure the safety of dam． The problems may meet in the construction are also discussed References | Related Articles | Metrics