基于断裂理论的深埋围岩洞室水力劈裂机理研究

doi:10.3969/j.issn.1674-0696.2013.06.21

重庆交通大学学报（自然科学版） ›› 2013, Vol. 32 ›› Issue (6): 1190-1194.DOI: 10.3969/j.issn.1674-0696.2013.06.21

基于断裂理论的深埋围岩洞室水力劈裂机理研究

袁鹏¹,赵明阶¹,汪魁¹,强跃^1,2

1.重庆交通大学水利水运工程教育部重点实验室，重庆 400074;2.重庆三峡学院土木工程学院，重庆 404000

收稿日期:2012-11-02 修回日期:2013-03-26 出版日期:2013-12-15 发布日期:2015-01-22
作者简介:袁鹏(1988—)，男，江西上高人，硕士研究生，主要从事岩石力学及水工结构方面的研究。E-mail:yuanpeng881120@126.com
基金资助:
水利水运工程教育部重点实验室开放基金项目( SLK2009 B02) ;重庆市三峡学院青年项目(12QN I7) ;重庆市教育委员会科学技术研究项目(KJ131107 )

Hydraulic Fracturing Mechanism of Surrounding Rock in Deep Chamber ?ased on Fracture Theory

Yuan Peng¹ , Zhao Mingjie ¹, Wang Kui¹ , Qiang Yue ^1,2

1 .Key Laboratory of Hydraulic & Walerway Engineering of Ministry of Education , Chongqing Jiaotong University , Chongqing 400074 , China;2.College of Civil Engineering ,Chongqing Three Gerges University , Chongqing 404000 , China

Received:2012-11-02 Revised:2013-03-26 Online:2013-12-15 Published:2015-01-22

摘要/Abstract

摘要： 基于深埋围岩洞室的特性，运用断裂力学原理，从微观断裂的角度分析了深埋围岩洞室水力劈裂现象;基于深部围岩所处的高地应力、高渗透压力、高温特性，在计算时考虑了高地应力与高渗透压力的共同作用;引人广义临界水压力，分析了拉剪及压剪复合断裂时11负界水压力与裂纹面方向之间的关系。研究表明:在压剪复合状态下最大广义临界水压力在原裂纹方向角β=55。取得，广义临界水压力随着所处洞室方位角及侧压力系数的变化而变化。

关键词: 水力劈裂, 断裂理论, 深埋围岩洞室, 临界水压

Abstract: Based on the properties of surrounding rock in deep chamber , the phenomenon of fracturing mechanism of sur rounding rock in deep chamber was analyzed by fracture dynamics , from the perspective of microcosmic fracture. SUITounding rock in deep chamber had three characteristics; high in-situ stress , high seepage pressure and high temperature. In the calculation , the common effect of high in-situ stress and high seepage pressure were considered , and a wide definition of critical intemal water pressure was introduced. And then the relation between the critical intemal water pressure and th巳direction of the fracture under tensile-shear was analyzed. Test results show that the max generalized critical water pressure is obtained at the direction angle of the fracture β= 55 0 under tensile-shear , and the generalized critical water pressure changes with the grotto azimuth angle and lateral pressure coefficients.

Key words: hydraulic fracturing, fracture theory, surrounding rock in deep chamber, the critical intemal water pressure

中图分类号:

TU452

袁鹏,赵明阶,汪魁,强跃. 基于断裂理论的深埋围岩洞室水力劈裂机理研究[J]. 重庆交通大学学报（自然科学版）, 2013, 32(6): 1190-1194.

Yuan Peng , Zhao Mingjie , Wang Kui , Qiang Yue. Hydraulic Fracturing Mechanism of Surrounding Rock in Deep Chamber ?ased on Fracture Theory[J]. Journal of Chongqing Jiaotong University(Natural Science), 2013, 32(6): 1190-1194.

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基于断裂理论的深埋围岩洞室水力劈裂机理研究

Hydraulic Fracturing Mechanism of Surrounding Rock in Deep Chamber ?ased on Fracture Theory

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