程潮铁矿多阶段巷道开挖数值模拟

以程潮铁矿巷道面积坍塌，尤其是由断层破碎带造成的巷道跨冒破坏为工程背景，采用数值模拟计算的研究方法．着重分析断层破碎带对多阶段巷道稳定性的影响程度．采用国际先进计算软件FLAC3．3，对巷道有断层时无支护及锚喷网支护两种工况进行了数值模拟计算，计算结果表明：对关键部位进行喷锚网支护后，有效地抑制了巷道的围岩位移，减小了拉应力和塑性区的大小，提高了巷道的整体稳定性，达到了预期的效果．

Numerical simulation research of wall rock stability of multi-Stage excavated workings at Chengchao iron mine

Aimed at the research actuality of working collapse in the mines where sublevel caving mining method are used, taking into consideration of the great area collapse of the tunnel, emphasized to analyze its influence degree to tunnel＇s stabilize by means of numerical simulation, this paper considered the fault and crush zone. So this research has great important theoretical and real practical significance and it has reached some conclusions. By using the international advanced software FLAC3.3, numerical simulation is carried out on such aspects as the tunnel having fault and crush zone and having supporting and no supporting. The results indicated that the host rock displacement is controlled availably, the whole stability of the tunnel is enhanced. It makes out that the reinforcement comes to the anticipant effect.