韩江东溪船闸通航水流条件优化试验研究

Experimental study on navigation flow condition of Dongxi ship lock in Hanjiang River

潮州供水枢纽东溪水闸段呈“C”形弯曲河道特点,新建船闸布置于弯道凸岸,上下游引航道中心线与河道交角较大。通过整体物理模型试验及自航船模验证试验,提出改善水流条件的具体措施。结果表明:通过降低通航标准、优化航线、开挖与调整凸岸岸线等措施,减小了引航道中心线与河道主流流向交角,减弱了上、下游引航道及口门区存在的横向流速、回流等不利流态;有效改善了东溪船闸的通航水流条件,为“C”形弯曲河段船闸布置提供参考。

The Dongxi sluice section of the Chaozhou water supply project is characterized by a C-shaped curved channel.The new ship lock is arranged on the convex bank of the curve,and the angles between the center line of upstream and downstream approach channel and river are very large.Through the physical model and ship model test,concrete measures to improve the flow conditions are put forward.The results show that through the measures of reducing navigation standard,optimizing routes,and excavating and adjusting convex shoreline,the angle between the center line of approach channel and the main stream is reduced,and the adverse flow patterns such as lateral velocity and return flow in upstream and downstream approach channel and entrance area are weakened.The navigation flow conditions of Dongxi lock are effectively improved,which can provide reference for the layout of similar types of ship lock.