建设双向泵站形成新型调水引流格局

Constructing bidirectional pumping station, forming a new pattern of water diversion and drainage

新沟河延伸拓浚工程是改善太湖水环境的流域性工程,也是流域洪水北排长江的流域性骨干工程。工程既能将直武地区5年一遇及其以下涝水由南排太湖改为北排长江;还可通过新沟河外排梅梁湖水体,改善梅梁湖湖区水动力条件,提高太湖水环境容量;具备遇水污染突发事件时,引长江水入太湖,扩大"引江济太"规模,保障梅梁湖等湖湾水源地供水安全,整个工程具有双向引、排水运行要求。本文以其中的江边枢纽为例,根据泵站运行特点,选择合适的机组型式,兼有排涝、引水功能,以此在太湖和长江之间形成有效联通通道,形成新的调水引流格局。

The Xingou River dredging project is not only a basin water environment improvement project in Taihu,but also a watershed backbone project of flood north into the Yangtze River.The project can divert the flood of oncein-a-5-years in Zhi-Wu area from south to Taihu to northward into the Yangtze River.The water of Meiliang Lake can be discharged through the Xingou River which improving water dynamic conditions and water environmental capacity of Taihu.When water pollution accident happened,the project can bring water from Yangtze River to Taihu Lake,which guarantees water supply safety of Meiliang Lake.The project has the function of bidirectional diversion and drainage.The riverside hub is taken as an example in this paper,according to the operation characteristics of pump station,appropriate unit type is selected.A new pattern of water diversion and drainage has been formed.