Abstract

Through the diversion project from Yangtze River to Hanjiang River, water will be draught from Jingjiang River reach of Yangtze River to lower Xinglong reach of Han River so that negative impacts of water quantity decreased about lower Xinglong reach of Hanjiang River can be reduced, and water environment of the river section can be improved as well as condition of water supply of towns and agricultural irrigation can be improved. The intake of the project will be built at the site from Juzhang estuary of Longzhouyuan reach in Upper Jingjiang River stretch in Yangtze River to 3.34km. Based on analysis of evolution of riverbed and the experiment of river engineering model, not only rules of evolution of river bed of intake reach after storage of Three Gorges Project and use, but also velocity and flow regime about intake trench, energy dissipation complexion of stilling basin of intake gate, engineering effect of sediment pool and snail settled pool and so on are studied. It shows that the results can be adopted or referenced to designing project.

Keywords: diversion project from Yangtze River to Hanjiang River, intake, river engineering model, river regime