Study on the stability of Baijiabao Landslide due to the three gorges water level rise

Reservoir impoundment is induced landslide deformation and instability of the important factors, while the water level change rate on the slope stability, the influence of reservoir Banks is very important. Based on the three gorges reservoir area White House bag landslide as an example, based on saturated-unsaturated seepage theory, finite element analysis of seepage and stability calculation method, consider different library water rising rate and sliding body different permeability coefficient two factors, the simulation of the reservoir water rises sliding body underground water level and safety coefficient variation law with time. The result shows that1. The water table with respect to the changes of the water level is in a certain lag, reservoir water infiltration slope is a gradual process, it is related to the rate of rise of the water level and the permeability coefficient of sliding body. 2. The changes of the water table closely related to the stability of landslide, enhance the higher the water table, The greater the saturation area of the sliding body, he worse the stability of the landslide. 3. The whole landslide stability decreased when the water level rises, the greater the rate of rise of the water level, the greater the permeability coefficient of sliding body, the worse the stability of the landslide.