[关键词]
[摘要]
北京市水资源危机已经成为约束城市社会经济发展的重要因素,南水北调中线正式通水后,可以为北京每年平均配水10亿m3。本文以北京市供水系统为研究对象,全面收集全市的供需水及供水配置情况,建立水资源配置WEAP模型,模拟了四种方案,分析评价不同来水情况下2020年北京市供水可持续性,并对供水配置网络做出了适当的修改。研究表明,南水北调中线工程可以显著改善北京市缺水情况,修改后的供水配置网络更利于各类水源的综合利用,保证北京市供水可持续性。
[Key word]
[Abstract]
Water scarcity has been a major constraint for both social and economic development in Beijing. When the middle route of the nation’s enormous south-to-north water diversion (SNWD) project begin to supply the water, it is supposed that more than one billion cubic meters of water will be diverted into Beijing annually. This paper focuses on quantitatively evaluating the relative sustainability of Beijing water supply system before and after SNWD project. The four alternative water resources deployment scenarios are considered for the assessment of sustainability in 2020, using the Water Evaluation and Planning System (WEAP) software, the existed water demand and also the supply data of Beijing. The sustainability indices are presented for each scenario, and two of those alternatives are proposed to enhance the sustainability of entire water supply system. Our results showed that the SNWD could significantly contribute to the relief of the water scarcity, and the proposed alternatives will be more beneficial in terms of comprehensive water resources utilization, thus eventually ensure a sustainable water supply in Beijing.
[中图分类号]
[基金项目]
国家科技重大专项项目“水质水量联合调控与应急处置关键技术研究与运行示范” (2012ZX07205); 水利部公益性行业科研专项经费项目“地下水开发与绿洲安全用水关键技术研究” (20131102), “水资源红线管理基础和监测统计考核体系研究” (201301001); 北京市科技计划课题“密云水库调蓄工程梯级泵站实时调度模型算法开发与应用” (Z141100006014049)