降雨入渗及地震作用下边坡稳定性研究

边坡滑坡给社会经济和人民生命安全带来了巨大威胁，降雨和地震是边坡滑坡的两大诱因。以云南省某矿山边坡作为研究对象，取样后在室内进行岩石力学实验，得到后期工作所需的岩石力学参数，利用霍克布朗准则推导出岩体的力学参数，运用理论计算和数值模拟分析降雨和地震对边坡稳定性影响，结果表明：1）在降雨入渗作用下，边坡出现滑坡主要是静水压力造成的；2）在地震作用下，当地震峰值加速度为0.1g时，有效塑性区主要位于边坡中下部，当增大地震峰值加速度，其范围向坡脚移动，当加速度为0.3g时，塑性区出现贯通趋势。

Study on Slope Stability under Rainfall Infiltration and Earthquake

Slope landslide has brought great threat to social economy and people''s life safety. Rainfall and earthquake are the two main causes of slope landslide. Taking a slope project in Yunnan Province as the research object, the rock mechanics parameters required for later work are obtained by rock mechanics experiment in laboratory after field sampling. The mechanical parameters of rock mass are deduced using Hoek-Brown criterion. The influence of rainfall and earthquake on slope stability is analyzed by theoretical calculation and numerical simulation. The results show that: 1) the slope slides under the action of rainfall infiltration is mainly caused by hydrostatic pressure; 2) under the earthquake action, when the seismic peak acceleration is 0.1g, the effective plastic zone is mainly located in the middle and lower part of the slope. When the seismic peak acceleration is increased, the range moves to the foot of the slope, and when the acceleration is 0.3g, the plastic zone tends to pass through.