福建德化霞碧滑坡渗流稳定性模拟分析

摘要

The infiltration of rain water results in the change of the seepage field in the landslide.With the increasing hydrostatic and hydrodynamic pressure and the decreasing shearing strength of soil mass,the change further leads to the landslide.By applying the saturated-unsaturated seepage finite element method,the present study establishes landslide seepage calculation model and makes a numerical simulation of landslide stability in hope of figuring out the landslide stability of the seepage with specified capacity,intensity,duration of rainfall and different delay time.%降雨入渗导致土体孔隙水压力的增大造成土体有效抗剪强度的降低,进而发生滑坡。本文建立滑坡饱和-非饱和渗流有限元模型,考虑孔隙水压力随时间和空间任意不规则分布,计算特定降雨量、降雨强度、降雨历时不同滞后时段基于渗流场的滑坡稳定性。