DEFORMATION OF XIELIUPO LANDSLIDE WITH CONSIDERATION OF TIME EFFECT

Xieliupo landslide in Zhouqu is a typical landslide in fracture zone. The fault not only controls the landslide boundary, but also affects its deformation. In this paper, the deformation and stress of landslide is discussed using finite element method with Drucker-Prager soil rheological constitutive model. The results are as follows. (1) The plastic deformation of soil is strongly affected by the faults. It is worse than that of footwall fault in the boundary of landslide. (2) There is alternant distribution of accumulation zone and cracking zone in landslide mass. (3) It is in the state of creeping deformation and the max deformation occurs in the center of the landslide with 0.3m per year. (4) The surcharge loading can significantly relieve pavement deformation of Highway No.S313.