充填体下残留矿柱回采地压监测技术研究与应用

Research and Application of Ground Pressure Monitoring Technology for Residual Pillar Mining under Filling Body

残留矿柱的回采条件往往具有较大的局限性,残矿周边的采空区及空区内存留的充填体等都会影响回采过程中周边矿岩的稳定性。文章以石湖金矿350 m中段3047试验采场的顶底柱回采为工程背景,因采场内留存有大量的干式充填体,为了保障顶底柱回采过程中的安全性,通过方案对比研究采用声发射+应力+位移为主要监测手段的地压监测系统,并通过监测所获得的数据,分析试验采场在回采过程中对周边围岩及采场内的地压影响规律,避免灾害事故,保障安全生产。

The mining conditions of residual pillars often have great limitations.The goaf around the residual mines and the filling body in the goaf will affect the stability of surrounding rocks in the mining process.In this paper,the top and bottom pillar mining in the 3047 test stope of the 350 m middle section of Shihu gold mine is taken as the engineering background.Because there are a lot of dry filling bodies in the stope,in order to ensure the safety of the top and bottom pillar mining process,the ground pressure monitoring system with acoustic emission+stress+displacement as the main monitoring hand is adopted through the scheme comparison study,and the data obtained through the monitoring is analyzed in the mining process of the test stope.In order to avoid disaster accidents and ensure safety in production,the law of influence on surrounding rock and ground pressure in the stope is studied.