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根据钻孔资料,运用概率积分法预测了矿区的地表移动程度;并采用灰色模型对典型矿井综合开采面引起的地表最终塌陷值在实测数据的基础上进行了预测。该煤矿开采后,塌陷严重,大部分矿井地表最大下沉值和水平位移值均超过有关设计规范允许值。在建筑物和线路及地表水体下开采时,除采取井下预留设保护煤柱和提前施工放水孔等措施外,还要加强井上观测,应用拉杆、圈梁等地面防护措施。塌陷地带用开采废弃土石和矸石充填后,及时种植树草,防止土地沙漠化。
According to the borehole data, the probability integral method is used to predict the surface movement of the mining area. The gray model is used to predict the ultimate collapse of the surface caused by the comprehensive mining face of a typical mine based on the measured data. After the mining, the coal mine collapsed seriously, and the maximum surface subsidence and horizontal displacement of most of the mines exceeded the allowable values of relevant design codes. In the mining of buildings and lines and surface water bodies, in addition to measures such as reserving pillar of coal pillar for pre-construction and pre-drainage holes in construction, measures such as uphole observation and application of protective measures such as tie rods and ring beams should be strengthened. Subsidence area with mining waste rock and waste filling, the timely planting tree grass to prevent desertification of land.