大型露天矿闭坑后地下水资源调整预测研究

以新闭坑的抚顺西露天矿为研究对象，利用Visual modflow构建三维水文地质模型，进行地下水运移规律分析，模拟结果表明，停排后西露天矿坑将汇水到60m稳定标高|受东露天抽水及地层影响，地下水由西南向东北流动，浑河由排泄源变为补给源|水均衡模拟结果可以看出，进入矿坑区84141m/d，人工排出水量为56768m/d，完全停排水不是最佳方案|进一步建立水资源优化模型，利用MATLAB进行优化计算，城镇用水分配600万m/a，工业用水分配400万m/a，生态用水分配700万m/a为合理配置，经济效益和社会效益两个目标所得结果整体较好。

Prediction of Groundwater Resources Adjustment after Large Open Pit Closure

Taking the recently closed pit of Fushun West Open-pit Mine as the research object, a three-dimensional hydrogeological model was constructed using visual modflow, and the analysis of groundwater movement was performed. The simulation results show that the West Open-pit pit will converge to a stable elevation of 60m after the stoppage; The impact of pumping and strata, groundwater flows from the southwest to the northeast, and the Hunhe River changes from a drainage source to a recharge source. The results of the water balance simulation show that entering the pit area is 84141 m3/d, and the artificially discharged water is 56768 m3/d. The best solution; further establish a water resource optimization model and use MATLAB to perform optimization calculations. Urban water allocation is 6 million m3/a, industrial water allocation is 4 million m3/a, and ecological water allocation is 7 million m3/a. The results of the two goals of social benefits are better overall.