不同降雨类型对边坡稳定性的分析与研究

强降雨或长时间降雨引起的边坡破坏对人类生命和财产造成了重大损失,分析降雨过程中边坡渗流场和稳定性随时间和空间的动态变化对边坡稳定性研究和预测有重要意义。不同降雨类型是边坡失稳破坏的主要因素之一,结合饱和-非饱和渗流理论,研究不同降雨类型下边坡渗流场的变化规律。结果表明:不同降雨类型条件下,计算时间停止后,边坡入渗深度有很大差别,边坡稳定安全系数随降雨循环次数增大而逐渐减小;体积含水率和孔隙水压力改变深度随降雨循环次数增大而逐渐增大。

Slope Stability Analysis Under Different Rainfall Types

The damage happened on slope which is under heavy rainfall or long-time rainfall caused a great loss to human life and property,the dynamic analysis of the temporal and spatial variation of slope seepage and stability in the process of rainfall has important significance for the research and prediction of slope stability.Different types of rainfall are one of the main factors of slope failure,and the variation law of seepage field of slope under different rainfall types is studied by using saturated-unsaturated seepage theory.The results show that the slope safety depth decreases with the increase of the number of rainfall cycles,and the depth of volume and pore water pressure decreases with the increase of the rainfall depth.