Stability Variation Characteristics of Liangshuijing Landslide During the Three Gorges Reservoir Running

Liangshuijing landslide is an old style resurrection-type soil landslide which is large and deep because of the factors of water level change,terrain features and so on.Based on the basic geology conditions of the landslide,the transfer coefficient method was used to evaluate the stability of the landslide after the Three Gorges Reservoir running and an experiment was made to study the impact of water content on stability.The results show that when the Three Gorges Reservoir is running,the stability of landslide is related to the range of sliding body flooded.The stabilities of the landslide change between 1.014 and 0.996 when the water level rises or falls at a rate of 1m/d between 175m to 145m which is in a state of most unsteady.At the same time,the shear strength of structure of rock and soil gets nonlinearly lowered as the Three Gorges Reservoir running enlarges the adverse effects on slope stability.