Abstract
The geological conditions are complex in the Longnan mountain area, and the landslide disasters are widely distributed and numerous, among which the large accumulation layer landslide is especially developed. This kind of landslide is mostly distributed along the river basin and has the characteristics of multi-phase and multistage. The slide body is mostly in the state of creep plastic flow, and it is easy to revive. In this paper, the creep characteristics and evolution model of the secondary landslide were studied based on the field geological survey and the numerical calculation method, in order to provide reference for the monitoring and treatment of the landslide in this area. The results show that the shear stress and shear strain concentration zone is mainly located near the previous sliding surface of the landslide, and the creep type is deep creep; The deformation of the sliding body in zone D show that the deformation of the trailing edge and the middle front is relatively small, while the deformation of the middle and the leading edge is large; At the present stage, the overall deformation mode of the slide body in the D area of Qinyu landslide is a slow creeping deformation mode of traction from the front, down-shifting from the middle to the back.
Published Version
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