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进行了采空区覆岩三带范围计算和地表移动延续时间效应分析,对采空区稳定性进行了初步评价。对南马圈矿和民采矿不同开采深度采矿运用MIDAS软件分阶段进行模拟,探讨采空区地表、覆岩和围岩水平位移、竖直沉降的变化规律;模拟采空区上方建筑物在地表不同位置施加以大小不同的荷载,分析其变化规律。采用全部充填注浆法、局部减跨支撑法、构筑隔离岩板法、独立生根浆柱法处治采空区,对冒落带和裂隙带注浆作了一定的探索和分析。应用XBHV-10型钢尺沉降仪进行现场监测,并对相关监测结果进行了统计分析。
The calculation of the area of overburden strata in goaf and the analysis of the effect of continuation time of surface movement are carried out, and the stability of goaf is preliminarily evaluated. The different mining depths of the Nanma Circle and Minmetals were simulated using the MIDAS software in stages to investigate the variation of horizontal displacement and vertical settlement of the surface, overburden and surrounding rock in the goaf, and to simulate the aboveground changes of the buildings above the goaf Location imposed by the size of the load, analysis of its variation. The method of full filling and grouting, partial reduction and support method, construction of isolation rock method and independent rooting column method were adopted to treat the gob area, and the grouting of caving zone and fissure zone was explored and analyzed. XBHV-10 steel ruler settlement instrument was used to carry out on-site monitoring, and the related monitoring results were statistically analyzed.