Analysis on Deformation Failure Mechanism of an Open-pit Landslide

摘要

Taken an open-pit landslide as an example, the cause of formation and the factors inducing the slope to failure are analyzed. According to deformation characteristic of the landslide, the deformation has been exacerbating with the deep mining in depth, and the deformation has close relationship with the rainfall. Rainwater infiltration, which soften the rock mass and induce the pore water pressure to increase, induce envoke landslides. Through analysis on the factors of landslides, the formation lithology(FL) and precipitation are main factors triggering generation and reactivation of landslides. Meanwhile, the deformation failure mechanism and instability mode of the landslide is obtained, which is the sliding and bending deformation model.