库水升降作用下水库库岸滑坡稳定性分析

Stability Analysis of Landslide Under Reservoir Water Level Fluctuation

库水位的升降是诱发水库库岸产生滑坡的重要原因.本文以兴山县柑橘园滑坡为例,在三峡水库调度的一个周期内,运用非饱和土力学中渗流和抗剪强度理论,对滑坡稳定性进行分析,得出滑坡体内渗流场及稳定性系数随库水位变动的变化规律,对库区滑坡的稳定性评价和治理有一定的指导意义.

Reservoir water level fluctuation is the major reason that induces the landslide occurrence.By using the theory of seepage and the shearing strength of unsaturated soil mechanics,this paper takes Ganjuyuan landslide in Xingshan county for example and analyzes the changes of landslide stability in one cycle of the Three Gorges Reservoir water level operation.Laws of changes of landside stability and infiltration with the reservoir water level fluctuation are obtained,so as to serve as guidance to the reservoir area landslide stability appraisal and treatment.