ABSTRACT
The stability of large scale landslide. Fanai in Lubuge hydropower station, with complexed properties, would be the key issue to affect downstream area and villages. Fanai landslide, located in the reservoir area of Lubuge hydropower station, had been slipped partly which affected by construction and reservoir water. Fanai landslide located on the reservoir left bank with the distance about 1.4 km to 2.2 km from damsite. The slip mass is mainly composed of rock block, granule, silty soil and clay, part rock block are keeping the original rock structure. Generally, the frame of landslide is a farraginous accumulation with rocks and soil. Fanai landslide is an ancient slide. Compositions of slip mass and slid belt, shear strength are key issues for the slide stability. According to limitation of stability, Fanai landslide can be classified into 4 zones. Zone C and Zone D may be induced some small slidings but would not influence the running of hydropower station.
