Visual Modflow在煤矿开采地下水数值模拟中的应用

摘要

In order to predict the influence of the extraction of No. 3 coal seam upon the overlying aquifer in Xiangyuan Coal Mine, the second-type flow boundary was determined by analyzing the hydro-geological conditions in this coal mining area, using Visual Modflow software and subdividing the computational domain, and the influence of the extraction of No. 3 coal seam on the overlying aquifer in this mine was simulated and predicted by using the iterative approximation method. The results showed that after the coal mining of the mine for 12. 6 years, the fall depth of water level at the funnel center was about 87 m and the influenced area was about 31. 85 km2 .%为了预测襄垣煤矿3号煤层开采对上覆含水层的影响,在分析襄垣煤矿所在区域水文地质情况的基础上,应用Visual Modflow软件,通过对计算域进行剖分,确定二类流量边界,采用迭代逼近法模拟预测了襄垣煤矿3号煤层开采对上覆含水层的影响。结果表明,煤矿开采12.6年后,漏斗中心的水位降深约为87 m,影响面积约为31.85 km2。