Stability Analysis of Shuiwenzhan Landslide under Water Level Fluctuation and Rainfall in Three Gorges Reservoir

摘要

Water is the most active and positive factors to landslide happened,reservoir water level fluctuation and rainfall are the main predisposing factors for landslide instability.Water level fluctuation can produce uplift effect and dynamic water pressure effect to the soils and rainfall infiltration can reduce the matric suction in unsaturated zone.Based on the situation of Three Gorges reservoir operation,Geo-studio software is used to study the changes of the internal flow seepage field in different lifting speeds and the variation of stability under the effect of reservoir water lift and rainfall of Shuiwenzhan landslide in Three Gorges reservoir.