Influences of physical and mechanical parameters of geo-material on stability of rock landslide

The influences of density,elastic modulus and Poisson's ratio of landslide mass,weak slip zone and landslide bed,and shear strength of weak slip zone on landslide stability are studied using the method combining finite element method with limit equilibrium method.The results show that there are positive relationships between the density of landslide bed,elastic modulus of landslide mass and weak slip zone,Poisson's ratio of landslide bed,shear strength index of weak slip zone and factor of stability of landslide,while there are negative relationships between the density of landslide mass and weak slip zone,elastic modulus of landslide bed,Poisson's ratio of landslide mass and factor of stability of landslide,and that the most important factors affecting landslide stability are shear strength index,the Poisson's ratio of weak slip zone and elastic modulus of landslide bed are in second order,and other parameters are non-sensitive to landslide stability.