某露天矿边坡稳定性分析与优化设计

Analysis of Slope Stability and Optimization Design in an Open-Pit Mine

运用临界滑动场理论方法,通过对系列坡角条件下危险滑面的搜寻,求出不同安全系数条件下边坡临界状态,由此可以确定到界边坡最佳坡角的设计方案,然后再应用4种极限平衡分析方法进行了安全评价,从而得到了露天矿到界边坡的优化设计方案。在此基础上,再利用三维数值模拟技术,对露天矿到界边坡的应力场分布特点进行了分析,得出其应力分布集中的区域和量值均较小,不会产生破坏性变形,从而验证了边坡设计的合理性。

In this article, method of critical sliding field theory is applied to search the dangerous sliding surface of slope under the condition of the slope angle and get the critical state of slope under the conditions of different safety factors, which can determine the optimum slope angle of the slope design, then four kinds of limit equilibrium analysis methods are applied for the safety evaluation so as to get the optimized design scheme of openpit mine slope. 3D numerical simulation technology is used at the same time to analyze the openpit mine on the boundary of the stress field distribution characteristics, and it is concluded that the stress distribution of the area and value is small, and it wont produce destructive deformation, which proves the rationality of the design of slope.