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为探究复杂巨厚煤层覆岩破坏规律,以抚顺矿区老虎台矿55002工作面所在区域为试验对象,采用TVLF煤矿探水雷达,分别对55002工作面未开采区域与55002工作面已开采区域进行探测,确定55002工作面开采前后覆岩结构变化特征;采用微震监测方法对探测结果进行了验证.结果表明:TVLF探水雷达探测的55002工作面覆岩破坏高度为240 m,这一高度也是此区域油母页岩和绿色页岩的分界面.微震探测的55002工作面回采前6个月覆岩破坏高度为100 m,回采过程中覆岩破坏高度在100~250 m,回采结束后6个月覆岩破坏高度为250 m.探水雷达与微震监测结果一致.确定了覆岩演化过程及其基本特征,确定了55002工作面覆岩和结构变化的主要影响因素,建立了老虎台矿复杂巨厚煤层覆岩破坏高度与55002工作面采高之间的关系,为老虎台矿及类似条件矿井水害的预测及防治工作提供了参考.
In order to explore the rule of overburden failure in the complex thick seam, taking the area of 55002 working face of Laohutai mine in Fushun mining area as the test object, TVLF coal mine water exploration radars were used to detect the undeveloped area of 55002 working face and the exploited area of 55002 working face respectively , The characteristics of the overburden rock structure before and after the mining of 55002 working face were determined, and the results of micro-seismic monitoring were verified.The results show that the height of the overburden rock in the 55002 working face detected by TVLF sounding radar is 240 m, The interface between oil shale and green shale.The 55002 face of microseismic exploration has a height of 100 m in the first 6 months before mining and 100 to 250 m in height in the process of recovery.The covered rock is destroyed 6 months after the end of mining With a height of 250 m.The sounding radar is consistent with the microseismic monitoring results.Development process and basic characteristics of overlying strata are confirmed, the main influencing factors of overlying strata and structural change of 55002 working face are determined, and the complicated and thick coal seam The relationship between the failure height of rock and the elevation of 55002 face has provided a reference for the prediction and control of mine water hazard in Tiger Station and similar conditions.