南乐县睢庄中层地下水水源地混合开采数值模拟研究

Numerical simulation for mixed exploitation of middle-layer groundwater source in Suizhuang,Nanle County

南乐县睢庄地下水水源地以浅层含水层及中层含水层混合开采作为供水水源,浅层潜水含水层组与下伏中层承压含水层组之间分布有一层粉质黏土、黏土,二者水力联系较差。基于GMS地下水模拟软件,根据水源地水文地质条件依据水文地质概念模型建立了地下水数学模型。并在水源地模拟实际开采条件进行了群抽试验,验证了所建立的地下水数学模型,评估了设计开采量的可行性以及水源地开采后地下水位的变化趋势。

The mixture of shallow-layer groundwater source and middle-layer groundwater source was used as the water supply source of Suizhuang,Nanle County.There was a layer of silty clay and clay between the shallow phreatic aquifer group and the underlying middle confined aquifer group,resulting in poor hydraulic connection.With the GMS groundwater simulation software,the groundwater mathematical model was established according to the hydrogeological conditions of the water source and the hydrogeological conceptual model.In addition,a group well pumping test was carried out to simulate the actual mining conditions at the water source site,to verify the established mathematical model of groundwater,and to evaluate the feasibility of the designed extraction volume and the change trend of the groundwater level after the water source site was mined.