Simulation of rockfall at Mingshan in Fengdu by discrete element method;

This paper introduced engineering geologic conditions of Baishapo rockfall in the Three Gorge reservoir area,analysed its formation mechanism and calculated its stability under main load compo.

Based on the geological exploration of Nanzhu landslide,the stability analysis of the landslide is studied when the water level of the Yangtze River falls from 175 m to 125 m.

According to the characteristics,material structure features,and the geological natures of the landslide, the calculation and evaluation for the stability of the landslide are performed with the consideration of three kinds of loading situations and residual thrust method.

The Zuoyituo landslide 83 km from the Three Gorges dam,is one of the major prospecting landslides in the reservoir area of the Three Gorges,lying on the southern bank of the Changjiang River, in the Nanmuyuan Village of Badong County of Hubei Province.

Moreover, it establishes mechanical model of roof structure after first destruction, and points out that sur-hinge-point is dangerous point by analyzing mechanical condition of sliding instability and rotary instabilit.