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基于采空区群三维数字建模及分布特征,提出了简化的采空区群稳定性数值模拟分析方案,利用FLAC3D软件计算分析采空区群稳定性状况。针对该矿采空区群稳定性较差的分析结果,建议采用低强度尾砂胶结充填料浆(灰砂比为1∶20,强度为0.4 MPa)充填处理下部空区,数值模拟分析研究结果显示,充填处理采空区群效果良好,大幅度减少了破坏范围,消除了采空区危害。
Based on the three-dimensional numerical modeling and distribution characteristics of the gob-quarry, a simplified numerical simulation program of the stability of the gob-gorging area was proposed. The stability of the gob-area group was calculated using FLAC3D software. In view of the analysis results of the poor stability of the gob-area in this mine, it is suggested to use the low-strength tailings cemented filling slurry (1:40 sand-sand ratio and 0.4 MPa strength) to fill the lower space, and the numerical simulation results It shows that the effect of filling and processing of gob-packs is good, greatly reducing the damage range and eliminating the hazard of goaf.