ABSTRACT
The discrete element model is established based on a two-dimensional particle flow program (PFC2D ). Its microscopic parameters were calibrated through laboratory experiments to simulate the deformation and failure process of the residual landslide, and to study its deformation failure mode and mechanism. The results show that under the action of gravity, the initial deformation and failure of the landslide are mainly caused by tension cracks at the foot of the slope and creep deformation in some parts. With the development of the landslide deformation, the cracks are pulled upward and expanded, and finally run through the whole sliding surface. The process reveals that its damage mode is typical traction progressive damage, and its damage process is divided into three stages. The research results can provide a reference for the safety problems of the same type of related slopes.
