周期性浸泡下三峡库区松散土体微观特性分析

重庆交通大学学报（自然科学版） ›› 2010, Vol. 29 ›› Issue (3): 445-449.

周期性浸泡下三峡库区松散土体微观特性分析

何晓英,唐红梅,陈洪凯,刘虎队

重庆交通大学河海学院岩土与地质工程系, 重庆 400074

收稿日期:2009-07-11 修回日期:2010-02-05 出版日期:2010-06-15 发布日期:2015-01-22
作者简介:何晓英(1987—) , 女, 新疆阿勒泰人, 硕士研究生, 从事岩土工程研究。E-mail:diewucanxue@126.com。
基金资助:
国家自然科学基金项目( 50678182) ; 重庆市重点自然科学基金项目( 2008BA0015)

Macroscopic Characteristics of Loose Earth in Cyclic Soak at Three Gorges Reservoir Area

HE Xiao-ying,TANG Hong-mei,CHEN Hong-kai,LIU Hu-dui

Department of Geological & Geotechnical Engineering,School of River & Ocean Engineering,Chongqing Jiaotong University,Chongqing 400074,China

Received:2009-07-11 Revised:2010-02-05 Online:2010-06-15 Published:2015-01-22

摘要/Abstract

摘要： 三峡库区水位上升至175m之后引发了新的地质灾害,尤其是引起了已发地质灾害的复发。已有研究未考虑周期性浸泡对三峡库区土体性质的影响。采取三峡库区典型松散土体,运用多晶X射线衍射仪对所采取的岩土样在天然状态、长期性浸泡状态、周期性浸泡状态试验工况下的物相进行定性、定量分析的物相变化,得出库区水位升降引起的周期性浸泡作用是导致土体结构和强度劣化的重要因素。

关键词: 矿物成分测试, 周期性浸泡, X衍射光谱, 松散土体, 三峡库区

Abstract: As the water level of Three Gorges Reservoir has risen up to 175m, it has already caused plenty of geologic disasters, especially caused some occurred disasters to recur. The current researches in this field don't take the influence of cyclical soak on Three Gorges Reservoir's earth into consideration. So the typical loose earth of Three Gorges Reservoir area is adopted, and the earth samples are investigated through a series of tests which are carried out under the condition of native state, longterm soak state and cyclical soak state. Phase's qualitative analysis and quantitative analysis on these earth samples are carried out by poly-crystal X ray diffractometer. Through comparing phase's analysis, the conclusion that the cyclic soak caused by the fluctuation of the water level at reservoir area is an important factor to cause the deterioration of earth structure and intensity is confirmed

Key words: mineral composition test, cyclic soak, X-diffractive spectrum, loose earth, Three Gorges Reservoir area

中图分类号:

TU45

何晓英,唐红梅,陈洪凯,刘虎队. 周期性浸泡下三峡库区松散土体微观特性分析[J]. 重庆交通大学学报（自然科学版）, 2010, 29(3): 445-449.

HE Xiao-ying,TANG Hong-mei,CHEN Hong-kai,LIU Hu-dui. Macroscopic Characteristics of Loose Earth in Cyclic Soak at Three Gorges Reservoir Area[J]. Journal of Chongqing Jiaotong University(Natural Science), 2010, 29(3): 445-449.

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