西藏曲松河左岸滑坡成因机制研究  

Study on Genetic Mechanism of Left Bank Landslide along Qusong River,Tibet

作　　者：杨宗轲 

机构地区：[1]广东核力工程勘察院,广州510800

出　　处：《路基工程》2015年第4期39-43,共5页Subgrade Engineering

基　　金：广东省教育厅科研基金资助项目(2008278)

摘　　要：基于曲松河左岸滑坡变形破坏特征与现场调研、勘探结果,探讨了该滑坡的成因机制。通过对该滑坡的稳定性进行有限元数值模拟分析,在天然状态下滑坡体处于蠕动变形阶段,趋近于临界破坏状态,这与野外调查的现状基本一致;而在饱和状态下,坡体中出现塑性贯通,再现了滑坡失稳过程。Based on the deformation failure characteristics of the left bank landslide along Qusong River and the results of field investigation and survey, the genetic mechanism thereof was discussed. Then with stability analysis by finite element numerical simulation, it was found out that the landslide under natural condition was near the critical stable state, being in the stage of creep deformation and approaching to the critical failure state, which was the same as the status quo from field investigation; and in the saturated state, there arose plastic penetration in the slope, representing the course of slope failure.

关 键 词：滑坡 地质灾害 稳定性分析 安全系数 治理措施 

分 类 号：U416.163[交通运输工程—道路与铁道工程]