基于FLAC^(3D)稳定性分析的残矿回采方案研究

Residual Ore Mining Program Based on FLAC^(3D) Stability Analysis

为了最大限度回收红透山铜矿浅部中段高品位矿柱,以-47 m中段残矿为研究对象,利用3D Mine软件建立了残矿三维模型,结合残矿形态及赋存条件提出了经济上合理、技术上可行的残矿回采方案,利用midas/gts和FLAC3D软件对残矿回收过程中矿柱的水平位移和最小主应力进行了模拟分析。分析表明红透山铜矿浅部中段残矿的回收宜采用中深孔落矿嗣后充填的采矿方法;回采过程中大部分矿柱是安全可靠的,但1#、9-1#、9-2#和10#间柱在回采模拟过程中会发生较大水平位移,可在采用一定安全措施的前提下对其进行回收,或留作永久矿柱不予回收。

In order to maximized the recovery rate of high grade copper pillar in the Hongtoushan copper mine shallow middle segment,took residual ore in -47 m middle segment as study object, established the three-dimensional model of remnant by 3 D Mine, combined with the morphology and occurrence conditions of residual ore, proposed a economy reasona- ble and technically feasible solution residual ore mining program, simulated and analyzed the horizontal displacement and the minimum principal stress of pillars during residual ore mining by MIDAS/GTS and FLAC3D. The analyses show most pillars are safety and reliability in the mining process, except 1^ # ,9 - 1^ # ,9 -2^^# and 10^# pillars have a great horizontal displacement in the simulation which should recovery under a certain security measures or keep as permanent.