Study On The Stability Of Erliban Landslide In Rising And Falling-off Of Water Level In The Three-gorges Reservoir

Erliban landslide is located in Gao Zhen, mainly due to the increase in the water level ofthe reservoir and the decline of reservoir landslide. In recent years, after the Three-Gorgesreservoir, the reservoir water level fluctuation in145m to175m, the reservoir flooded part oflandslide, the change of seepage field, a serious impact on the stability of landslide, landslidestability state changes to critical state or peristaltic state. In this paper, the investigation anddetection of Erliban governance based on the landslide, and draws the conclusion, the waterlevel rise and decline process influence on slope stability, mainly studies the followingaspects:1. On the basis of limit equilibrium of Morgenstern-Price method, it is deduced therelationship among the seepage forces, the water weight and the water pressure around theslice.2. Based on physical and mechanical parameters of landslide material, established thefinite element saturated unsaturated seepage calculation model, according to the process ofreservoir water level fluctuation, to simulate the variation of Erliban landslide transientseepage field, analysis of the reservoir water level change, change law of pore water pressure.3. Analysis of the impact of the lifting speed of the reservoir water level on the stabilityof the landslide...