降雨条件下某矿山排土场边坡稳定性分析

Analysis of slope stability of a mine dump under rainfall conditions

降雨入渗会引起排土场边坡岩土体强度降低,增加上部岩土体容重,导致边坡稳定性降低。以某露天矿山排土场边坡为例,采用GeoStudio软件模拟分析了不同降雨时长下边坡孔隙水压力特征与安全系数。结果表明:随着降雨时长的增加,孔隙水压力极值不断增大,且孔隙水压力朝向边坡顶部不断增大,安全系数则不断降低。研究结果为该矿山排土场边坡稳定提供参考。

Rainfall infiltration can cause a decrease in the strength of the rock and soil mass on the dump slope,increase the bulk density of the upper rock and soil mass,and reduce the stability of the slope.This paper takes a mine dump slope as the background,and uses GeoStudio software to simulate and analyze the pore water pressure characteris-tics and safety factors under different rainfall durations.The simulation results indicate that as the duration of rainfall increases,the limit value of pore water pressure continuously increases,and the pore water pressure increases towards the top of the slope,while the corresponding safety factor decreases.The study provides references for the stability of the dump slope in the mine.