摘要：Fishway is the only path through which the aquatic animal fauna can smoothly pass obstruction of itsupstream migration. The conventional design and study of fishway are mainly focused on the internal structureand flow conditions, while the researches on the layout of fishway inlet and the optimization of fishwaystructure are relatively less. That leads to difficulties or even impossibilities for fishes to enter the fishway inengineering applications. In this paper, the principles of the fishway inlet location selection were verified bynumerical simulations through establishing the ecological hydraulics indexes of fishway inlet as well ascombining the fish swimming performance with the flow pattern index of fishway inlet. What’s more, a newfishway inlet structure which can control the discharge and velocity was proposed so as to take into accountthe role of tempting fish and making up water. Through the above methods, the fishway inlet has beenoptimized and it can help fish smoothly finish migration.
