MECHANISM FOR OCCURRENCE OF SHISHOUJIE LANDSLIDE AND ITS CONTROL MEASURES

Shishuojie landslide is located on the right bank of bayou of lower reaches of Tuojiang River. Its volume is about 10.3210 4m 3. The main factors for the formation of the landslide are the periodic soaking washing of silt clay in the slope by river and artificial loading production and living activities. The mechanism for the landslide ouucrrence appears to be composite draught and push. The process of slide can be divided into three stages: the reduction of clay strength in slip zone, and the shifting of landslide baby composite stress from back to front, and integer slide. According to the groundwater regime, a statics model is set up to estimate the landslide stability. In control on the landslide we must conside not only the stability of landslide but also the safe operation of buildings and then take the measures against the main factors.