三峡库区某滑坡成灾降雨过程的确定

以三峡库区某滑坡为研究对象,整理分析该地区的地质资料及降雨资料。基于饱和-非饱和渗流理论,采用GEO-SLOPE有限元计算软件建立网格模型,分析模拟该滑坡在降雨与库水共同作用下的稳定性。根据概率统计理论拟合得到滑坡的推力与抗力的联合概率密度分布函数,进而达到确定该滑坡的成灾降雨过程。通过分析计算结果与实测资料,为其它类似滑坡防治工程设计要求的降雨过程提供可参考的资料。

Determination for Inundated Rainfall Process of One Landslide in Three Gorges Reservoir Area

One landslide in Three Gorges reservoir area is taken here as a research object to analyze the region’s geological data and rainfall data.By using the finite element software GEO-SLOPE to establish the grid model,the stability of the landslide under the combined action of rainfall and reservoir water is analyzed and simulated based on the saturated-unsaturated seepage theory.According to the theory of probability and statistics,the joint probability density distribution function of thrust and resistance of the landslide is obtained by filling,then the inundated rainfall process of the landslide could be determined.Through analyzing the calculation results and measured data,some reference data could be provided for the rainfall process in the design of other similar landslide controlling engineerings.