废石充填采空区稳定性变化趋势分析

Analysis on the Stability Trends of Wast Rocks Filling Goaf

利用地压监测系统,对某磷矿废石充填过程中的采空区稳定性进行实时监测,并根据监测数据对采空区顶底板收敛趋势、矿柱应力变化、微震活动进行分析,分析结果与矿山现场实际一致。通过对废石充填影响采空区稳定性的量化评判,证明了在废石充填法处理采空区的过程中进行地压监测是必要的。

Stability of the goaf in the process of wast rocks filling is monitored in real- time by using of the ground pressure monitoring system. According to the monitoring data,the convergence trend of gob roof and floor,pillar stress changes and seismic activities are analyzed. The analysis results is consistence with the mine actual situations. The quantitative evaluation results of the stability of goaf that affected by wast rocks filling proved that,it is necessary to conduct ground pressure monitoring in the process of filling the goaf by using of waste rocks filling method.