尾矿坝渗流对露天采场高陡边坡稳定性影响分析

Analysis of influence of seepage flow in tailings dam on stability of high and steep slope in open pit

中文关键词: 尾矿坝  渗流  数值模拟  高陡边坡  边坡稳定性

英文关键词: tailings pond  seepage  numerical simulation  high and steep slope  slope stability

中文摘要:

      为分析尾矿坝渗流作用对露天采场高陡边坡稳定性影响，本文选取西藏某露天矿山为研究对象，通过室内实验分析和数值模拟结合的方式，采用GEO-studio分析软件，对边坡渗流场进行计算，最终得到尾矿坝渗流影响前后典型剖面稳定性变化。研究结果表明：尾矿库坝渗流作用下，采场边坡浸润面发生一定变化，静水压力增长，对边坡稳定性存在负面影响。尾矿库排放至最终位置时，典型剖面潜在滑动面范围出现一定变化，滑动面下端向坡底方向扩展。研究成果可为尾矿库渗流作用影响下的高陡边坡工程提供参考。

英文摘要:

      In order to analyze the influence of seepage action of tailings dam on the stability of high and steep slope in open pit， an open pit mine in Xizang Province was selected as the research object. Through the combination of laboratory experiment analysis and numerical simulation， GEO-studio analysis software was used to calculate the seepage field of slope， and finally the typical profile stability changes before and after the seepage effect of tailings dam were obtained. The results show that under the seepage action of tailings dam， the slope wetting surface changes and the hydrostatic pressure increases， which has a negative influence on the stability of the slope. When the tailings pond is discharged to the final position， the range of potential sliding surface of the typical section changes to a certain extent， and the lower end of the sliding surface expands to the slope bottom. The research results can provide reference for similar projects.