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大清河淀西平原为海河流域平原区的水资源三级区,同时也是南水北调中线一期工程受水区,随着经济的迅速发展,该区域需水量不断增加,水资源供需矛盾日益突出,而南水北调中线工程通水后其水资源供给格局将发生较大变化。采用多目标优化算法,以节约用水和恢复地下水位为目标构建了多目标优化模型,并以2020年为水平年,分析了南水北调中线工程通水后大清河淀西平原地下水开发利用与修复情况。结果表明,南水北调中线工程达效程度对大清河淀西平原缺水率有明显影响。
With the rapid economic development, water demand in this area has been increasing constantly, and the contradiction between supply and demand of water resources has become increasingly prominent. However, due to the rapid economic development, the West Lake Plain of Daqing River is the water resources tertiary zone in the plain area of the Haihe River Basin. After the water diversion project passes through the mid-route of the South-to-North Water Diversion Project, its water supply pattern will change greatly. Multi-objective optimization algorithm was used to build a multi-objective optimization model with water saving and groundwater table recovery. The development and utilization of groundwater in the western part of Daqing River after the water transfer of the South-to-North Water Diversion Middle Route Project was analyzed with 2020 as the horizontal year. The results show that the efficiency of the Middle Route of South-to-North Water Diversion Project has a significant impact on the water deficit rate in the western Qinghai Lake.