三维极限平衡法在露天矿边坡稳定性分析中的应用

Application of Three Dimensional Limit Equilibrium Method in Slope Stability Analysis of Open-pit Mine

本文以某露天矿为研究背景,采用三维极限平衡法对该矿各区域边坡开展稳定性分析,通过SLOPE2000软件对实现对各区安全系数的求解,并进一步提出边坡角优化建议。同时,软件采用模拟退火算法对各区域边坡破坏的最危险滑动面进行搜索,利用建模软件建立得到三维滑动面模型并展开分析。通过应用研究表明:采用三维极限平衡法对露天矿边坡稳定性系数计算,结果更具真实性;通过模拟退火法搜索并模拟得到的最危险滑动面具有的一定适用性,便于正确指导边坡滑坡治理。

This paper takes an open-pit mine as the research object,adopts the three dimensional limit equilibrium method to carry out the stability analysis of the slopes in each area of the mine,realizes the solution of the safety factors of each area through SLOPE2000 software,and further puts forward the suggestions of slope angle optimization.At the same time,the software uses the simulated annealing algorithm to search for the most dangerous sliding surface of slope failure in each area,and a three-dimensional sliding surface model is established by the modeling software and the analysis of it is conducted.The applied research shows that the results obtained by adopting three dimensional limit equilibrium method are more realistic in the calculation of slope stability coefficient of open-pit mine;and the results that the most dangerous sliding surface searched and simulated by the simulated annealing method have certain applicability,which is convenient to guide the correct landslide treatment of slope.