汶川地震对望月寨滑坡稳定性影响研究  

Research on impact of Wenchuan earthquake on stability of Wangyuezhai landslide

作　　者：杜杰[1] 冯文凯[1] 石豫川[1] 陈倩[2] 魏昌利[2] 李长顺[2] 

机构地区：[1]成都理工大学地质灾害防治与地质环境保护国家重点实验室,成都610059 [2]四川省地质调查院水工环中心,成都610031

出　　处：《岩土力学》2010年第3期856-862,共7页Rock and Soil Mechanics

基　　金：国家自然科学基金(青年)项目(No40802073);"科技减灾;重建家园"专项基金项目(NoDZJK-0811);国家重点基础研究发展计划(973)项目(No2008CB425801)

摘　　要："5.12"汶川地震诱发大面积的山体滑坡,直接威胁人类的生命财产安全,但同时也为研究地震对滑坡的影响提供了宝贵的素材。以四川省理县望月寨滑坡为例,在对地震前后滑坡基本特征深入研究的基础上,采用极限平衡法和有限差分法对地震前后该滑坡的稳定性和应力应变特征进行了计算、模拟和对比分析,分析结果与地震前后滑坡的宏观地质现象均具有较高地吻合度。研究成果为深入分析地震对滑坡影响及防灾减灾提供了可靠依据。＂5.12＂ Wenchuan earthquake induced a large number of landslides, which had directly threaded human lives and property safety. But at the same time, it also provided valuable material to study the impact of earthquakes on the landslide. Taking Wangyuezhai landslide instantiated in Li city of Sichuan Province for example, on the basis of exhaustively mastering the basic characteristics of landslide before and after Wenchuan earthquake, stability and stress-strain features were then calculated and analyzed by limiting equilibrium method and finite difference method, which could analyze landslide＇s deformation features from the respect of stress-strain. The analytical results are consistent with the macro-geological phenomena before and after the earthquake. These results provide a reliable basis for the future study of the impact of earthquakes on the landslide and geohazard prevention ＆ geoenvironment protection.

关 键 词：汶川地震 望月寨滑坡 稳定性 极限平衡法 有限差分法 

分 类 号：P642.22[天文地球—工程地质学]