关键词: 露天矿闭坑, 地下水运移, 水均衡, 水资源优化

Abstract: 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.