MOTION FEATURE AND NUMERICAL SIMULATION ANALYSIS OF JIWEISHAN LANDSLIDE WITH RAPID AND LONG RUN-OUT

This paper is based on detailed geological survey of the Jiweishan landslide. It analyzes the characteristics of landslide geological environment background, slide source characteristics and deposition area. It discusses the movement characteristics of three phases including the landslide instability, collision and sliding accumulation. It establishes the geological model of Jiweishan landslide. It takes the advantage of DAN-3D numerical simulation software. The landslide is simulated by choosing the FVF combination model on the motion characteristics. It finally gets the landslide accumulation, scraping area and sliding distance features. Through analysis and comparison, the simulation results are consistent with the actual situation. So this analysis method can be used for early assessment and prediction of disaster area to provide technical support for rapid and long run-out landslide.