某铁矿高分段空场嗣后充填采矿巷道围岩稳定性分析

Stability Analysis of the Surrounding Rock of the High Sublevel Open Stoping Subsequent by Filling Mining Roadway in a Iron Mine

某铁矿现阶段采用高分段空场嗣后充填采矿法生产,为确保巷道在开采过程中围岩稳定,采用了FLAC^(3D)软件对该方法的开采支护过程进行了模拟,分析了上下分层开采前后巷道围岩的应力和位移变化特征,验证了已有采场结构参数与支护参数的合理性。

The high sublevel open stoping subsequent by filling mining method is adopted in a iron mine in recent years. In order to guarantee the stability of roadway surrounding rock during the mining process,the mining supporting process of the mining method is simulated and analyzed by using FLAC^（3D） software,and the changing characteristics of stress and displacement of roadway surrounding rock before and after the mining of upper and lower layers are discussed in detail,and the rationality of the structural parameters and supporting parameters of the stope are verified.