沁河流域水资源安全利用分析

Research on the Water Resources Utilization in Qinghe River

摘要: 根据沁河流域生态环境需水量计算结果，并结合目前引沁入汾和引沁入丹两项跨流域引水工程的引水量设计，对流域水资源安全利用情况分析，结果显示：在满足城市和工业供水95%保证率条件下(相当于特大干旱年)，两项引沁工程的引水量将使流域生态环境基本需水量的最低要求得不到满足，如按原设计进行供水，极有可能导致流域生态环境恶化，此外，两大主要水利工程的泥沙和调节库容设计存在问题均可能对水资源安全利用和产生影响。针对性的建议包括适当加大在建、拟建大型水库的底孔排沙能力和多年调节库容，调整对汾河流域临汾市和丹河流域晋城市供水数量等。

Abstract: According to the water utilization in Qinhe River and two inter-basin diversion projects, the hy-drological analysis and calculation results show that the minimum environmental water require-ment of Qinghe river cannot be met, especially for successive years of drought, so the ecological environment would be deteriorated. It suggested that the sediment discharge capacity by the dam bottom outlet and carryover storage of the two constructions should be expanded appropriately. And water supply to Linfen city and Jincheng city should also be reduced.