降雨条件下矿山排土场边坡稳定性分析方法及其应用

摘要

以矿山排土场边坡稳定性为研究对象，基于极限平衡理论，推导了边坡四棱锥滑坡体的三维稳定判定方法。以马钢南山矿高村排土场工程为背景，获得了排土场散体物料强度与含水量之间的关系，分析了降雨入渗条件下排土场边坡的稳定性。由试验和分析可知，降雨入渗增加了排土场散体物料的含水量，降低了其抗剪强度指标，边坡稳定性也逐渐降低。%Taking stability of mine dump slope as the research object and based on limit equilibrium theory,the three dimensional stabil-ity judgment method of slope basing on the four pyramid failure mode was deduced. Taking Nanshan Mine Gaocun Dump of Ma Steel as pro-ject background,the relationship between the dump granular material strength and the water content was obtained and the dump slope stability under raining was analyzed. It was said that rainfall could increase the water content of dump granular material and reduce the shear strength and cause the failure of slope occurring.