Study on Design of Ship Lift Auxiliary Lock Water Filling/Emptying System and Operation Mode of Lock Gate

Abstract

The docking between ship lift chamber and upstream/downstream is an important link in the whole process of ship lift operation. The wave and flow movement generated by the hub operating downstream can easily lead to the failure of ship lift docking or ship grounding. To deal with the problem of large amplitude and high frequency of water level fluctuations downstream of Baise ship lift, an auxiliary lock is set up at the lower lock head of the ship lift. The extreme lift height of Baise auxiliary lock is 5.64 m with a two-way hydraulic head, and the size of the chamber is large, therefore it is faced with the problems of water filling/emptying efficiency and ship navigation safety. In this paper, a kind of water F/E system combining water filling under the gate and grid energy dissipation type is designed, and a scale of 1:30 Baise auxiliary lock chamber physical model and three-dimensional mathematical model are established. The berthing conditions of ships in the auxiliary lock under different water level variations and lock gate operation modes are analyzed. Besides the hydraulic characteristics of the lock filling/emptying system are measured. The operation mode of lock gate under different water level variations is recommended.