鄱阳湖水利枢纽鱼道布置方案及进口环境流场模拟研究

Study on the Layout of Fishway and Environmental Flow Field Simulation of Entrances in Poyang Lake Water Control Project

结合鄱阳湖水利枢纽总体布置、调度运行方式等工程特性,研究分析了过鱼设施运行条件、过鱼对象及过鱼季节,提出了右岸布置高、低水位双鱼道的过鱼设施布置型式,并确定了鱼道内部结构尺寸。采用数值模拟计算方法对下游鱼道进口环境流场进行模拟计算。结果表明,采用补水措施可有效改善进鱼口环境流场、扩大诱鱼流速范围,有利于鱼类洄游上溯,提升鱼道过鱼效果,研究成果可为江湖连通水利枢纽过鱼设施设计提供参考。

Combined with the general arrangement and dispatching operation schemes of the Poyang Lake water con-trol project,the operation conditions of fish facilities,fish targets and fish seasons were analyzed.The layout of fish pas-sage facility for high and low water level entrances of fishway on the right bank was proposed,and the internal structural dimensions of the fishway were determined.The numerical simulation calculation method was used to simulate the flow field near the downstream entrances of fishway.The results show that the use of water replenishment measures can effec-tively improve the flow field of entrances of fishway,expand the range of fish attracting flow velocity.It is beneficial for fish migration and enhances the fishway passing effect.The research results can provide reference for the design of fish passage facilities in water control project connecting rivers and lakes.