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河北省南水北调受水区地表水资源严重匮乏,由于长期超量开采地下水,造成诸如地下水位持续下降、地面沉降及地裂缝、岩溶塌陷、海水入侵及水质污染等一系列环境地质问题。在综合考虑复杂地质及水文地质条件的基础上,利用FEFLOW模型软件建立了南水北调受水区地下水系统三维数值模型,经过模拟调试所获得的水文地质参数基本符合水文地质勘查结果,计算所得的地下水流场基本反映了南水北调受水区的地下水位的实际分布情况,表明所建模型具有较好的仿真效果和较高的可信度。使用识别后的地下水数值模型,分析区域地下水动态变化,研究南水北调受水区深浅层地下水资源量,为超采区地下水综合治理措施和效果评估提供科学依据。
Due to the serious shortage of surface water resources in the receiving water area of the South-North Water Diversion Project in Hebei Province, a series of environmental and geological problems such as the continued decline of underground water levels, land subsidence and ground fissures, karst collapse, seawater intrusion and water pollution have resulted from the over-exploitation of groundwater for a long time. Based on comprehensive consideration of complex geological and hydrogeological conditions, a three-dimensional numerical model of groundwater system in South-to-North Water Diversion Project was established by using FEFLOW model software. The hydrogeological parameters obtained through simulation and debugging are basically in line with the results of hydrogeological exploration. The calculated groundwater flow The field basically reflects the actual distribution of groundwater level in the receiving area of the South-to-North Water Diversion Project, indicating that the model has good simulation results and high credibility. Using the identified groundwater numerical model, the dynamic changes of groundwater in the area are analyzed, and the groundwater resources in deep and shallow water receiving areas of South-to-North Water Diversion Project are studied to provide a scientific basis for comprehensive control measures and effect evaluation of groundwater in overdraft areas.