摘要
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 problem of mine flooding caused by surface water, the plash around the industry square of a mine was taken as an example to study the seepage laws of surface water. A simulation done by FLAC3 Dwas used by analysing the distribution of the mine water filling channel cased by the three belts. The range of the diversion fissure zone was determined after compared the simulation with calculations. Then the characteristics of seepage was analyzed by using the numerical simulation software COMSOL. The results of the two simulations demonstrate that the height of the mine water filling channel is approximately 67 m. And the time that surface water filtrates into the goaf is about 14~16 days. The seeper will arrive the goaf within a short period while surface water and the water flowing fractured zone is connected.
出处
《煤炭技术》
CAS
北大核心
2015年第9期180-182,共3页
Coal Technology
关键词
地表积水
导水通道
数值模拟
渗水规律
COMSOL
surface ponding
water channels
numerical simulation
law of water seepage
COMSOL
