关键词: 降雨强度； 渗流场； 饱和-非饱和渗流, 稳定性滑坡

Abstract:

With the landslide in Shihuixi village of Tongren, Guizhou Province as a study case of typical landslide, a geological model for Shihuixi landslide on the basis of its engineering-geological conditions is established. Based on saturated-unsaturated seepage theory and by applying SEEP/W module in GeoStudio 2004, the evolutionary features and laws of Shihuixi landslide seepage field are studied under different rainfall intensity (50mm/d、100mm/d、200mm/d) for the first day and the seventh day after the rainfall. Based on the theory of limit equilibrium and SLOPE/W module, the evolutionary features and laws of the stability of Shihuixi landslide are investigated under the effect of different rainfall intensity during the rain process and from the first day to the seventh after the rain. The deformation mechanism of Shihuixi landslide is summarized and a theoretical exploration of the deformation mechanism of landslides of the same type in this region is conducted.