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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。
By using the theory of critical slip field, the critical state of slope with different safety factors can be obtained by searching the dangerous slip surface under the condition of series of slope angles, and the optimal slope angle can be determined. Then, Four kinds of limit equilibrium analysis method of safety assessment, which has been the open pit to the boundary slope of the optimal design. On this basis, the three-dimensional numerical simulation technology is used to analyze the stress field distribution characteristics of the open pit to the boundary slope. It is concluded that the stress concentration distribution is small in area and small in magnitude without destructive deformation, Thus verifying the rationality of slope design.