万家寨水库取水和引黄工程北干线水量调蓄研究

Study on water taking from Wanjiazhai Reservoir and storage capacity of North Trunk Line of Yellow River Delivery Project

山西省万家寨引黄工程设计之初,根据万家寨水库运行水位和引水含沙量,确定每年8、9两个月不引水,并据此计算引水和调蓄工程规模。从那时以来,供、受水两方面都发生了一些不容忽视的变化。因此,研究较好的引水和水量调蓄方案,就成为当前引黄工程北干线设计中的重要问题。这里对引黄工程北干线引水规模进行了重新评价,并介绍了受水区重心向大同靠拢及其泥沙处理技术的改进,也包含了对万家寨水库本身在来水来沙、冲沙运行方面出现的新情况的研究。

At the beginning of the project design of Wanjiazhai Yellow River Delivery Project, it was determined not to deliver water during August and September every year based on the operation water level of Wanjiazhai Reservoir and the sediment content of the delivered water at that time ; on the basis of which the water taking amount and the relevant storage capacity were calculated as well. From then on, some changes have occurred in both the water supply and water supplied aspects. Therefore, it is important to study the better water taking and water storage programmings for the project at present. Under this circumstance, the scale of the water delivery of the project is re-estimated herein, and then the movement of the center of the water supplied area to Datong City and the modification of the technique for the sediment treatment are introduced along with the study on the new conditions of the incoming water and sediment of Wanjiazhai Reservoir itself as well.