深井硬岩矿山采场结构参数优化的数值模拟研究

Numerical simulation study on the optimization of stope structure parameters in deep hard rock mines

摘要: 本文利用有限元数值分析软件对深井硬岩矿山采场高度为80m,跨度分别为15m、20m、25m、30m四种工况下的采场稳定性进行了优化数值模拟研究,定量地计算和分析不同跨度下采场围岩的应力、位移和拉应力区的分布状况,确定了有利于采场稳定的结构参数。研究结果表明:在深井硬岩矿山中,当采场高度为80m,采场跨度为20m时,采场围岩的受力状态与整体稳定性较好。研究结果给深井硬岩矿山采场设计提供了新的思路和方法。

Abstract: In this paper,the stope stability of height 80m,spans 15m,20m,25m,30mwere optimized by finite element software in deep hard rock mines,and the stress distribution,displacement trend and tensile stress area of different spans were analyzed quantitatively.The stable stope structure parameters in deep hard rock mines were determined.The results show that:The optimal stope structure parameters is height 80m,span 20min deep hard rock mines,the stress distribution better status and stability.It provides a new way and method for stope design in deep hard rock mines.