滑坡滑动面强度参数敏感性分析及其反演  

Sensitivity Analysis and Inversion of Strength Parameters of Landslide Sliding Surface

作　　者：叶李胜 YE Li-sheng(Heyuan Engineering Survey Institute of Nuclear Industry,Heyuan Guangdong 517001,China)

机构地区：[1]核工业河源工程勘察院,广东河源517001

出　　处：《西部探矿工程》2022年第3期12-15,共4页West-China Exploration Engineering

摘　　要：滑坡滑动面抗剪强度参数的选取是滑坡勘查工作的关键性问题之一。以新洞滑坡为例,在室内土工试验结果的基础上,对滑带土强度参数进行敏感性分析,并采用反演法确定了滑动面强度参数。结果表明内摩擦角φ值比粘聚力c值对滑坡的稳定性更敏感,反演值位于室内土工参数的中位数附近,说明反演参数较为合理。可为类似滑坡勘查及治理工程设计提供一定的参考借鉴。The selection of shear strength parameters of landslide sliding surface is one of the key problems in landslide exploration.Taking Xindong landslide as an example,based on the results of indoor geotechnical test,the sensitivity of soil strength parameters in sliding zone is analyzed,and the strength parameters of sliding surface are determined by inversion method.The results show that the internal friction angle φ value is more sensitive to the stability of landslide than cohesion c value.The inversion value is near the median of indoor geotechnical parameters,indicating that the inversion parameters are more reasonable.It can provide some reference for similar landslide exploration and treatment engineering design.

关 键 词：滑坡 滑动面 敏感性分析 反演法 

分 类 号：P642[天文地球—工程地质学]