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针对地表积水可能导致的矿井透水问题,以新泰市某煤矿工业广场周边积水坑为例,利用FLAC3D软件对可能形成矿井充水通道的覆岩“上三带”进行模拟,对比理论计算后确定导水裂隙带范围;使用COMSOL模拟软件对地表积水渗流状况进行模拟,分析积水渗流特点。综合分析2次模拟结果,上煤层采动后导水裂隙带高度约67 m;岩层饱和状态下,地表水渗流到采空区的时间为14~16 d;当水与导水裂隙区域沟通时,积水将在短时间内渗入采空区。
Aiming at the mine permeable water which may be caused by the surface water, a case study of a coal mine industrial plaza in Xintai City was taken as an example. FLAC3D was used to simulate the overlying strata of the overburden, After theoretical calculation, the range of water-conducting fractured zone was determined. The COFCOL simulation software was used to simulate the seepage of surface water and the characteristics of seepage flow were analyzed. According to the results of two simulations, the height of water-carrying fractured zone after coal mining is about 67 m; when the rock is saturated, the time from surface water seepage to goaf is 14-16 days; when water is communicated with the fractured zone , Water will infiltrate the goaf in a short time.