黄土泥岩接触面滑移机理的数值模拟

Numerical simulation on the slip mechanism about interface of loess-mudstone

以晋陕蒙接壤区黄土泥岩接触地带滑坡为工程研究背景,分析研究黄土泥岩接触面的滑坡机理。研究方法主要是室内试验和FLAC2D数值模拟。室内试验确定了黄土的基本物理力学参数,以及黄土泥岩接触面摩擦特性,通过FLAC2D数值计算软件建模并对坡体稳定性进行数值模拟和分析,以接触面水平位移、剪应变及孔压发展等参数变化分析坡角、降雨以及人为活动引起的黄土泥岩接触面滑移机理。

Engineering research was based on the contact zone of loess mudstone in the contiguous area of Shanxi ,Shaanxi and Inner Mongolia and analyzed in the slip mechanism about interface of loess-mudstone .Research methods were mainly utilized FLAC 2D numerical simulation and indoor experi-ments .T he basic physical parameters of loess and friction characteristics about interface of loess -mudstone were determined through experiment .FLAC2D numerical simulation software was used to modeling ,numerical simulation and analysis on slope stability .The variation of parameters include horizontal displacement ,shear strain and development of pore pressure was used to analysis the slip mechanism about interface of loess -mudstone caused by the angle of the slope ,rainfall and the human activities .