Influence of Waterproof Wall in Approach Channel of Double-Line Ship Lock on Flow Condition

Unsteady flow during lock filling and emptying in approach channel of double-line ship lock is more complicated than that of single line ship lock. In this paper, by a 3-D numerical model, the water fluctuation inside approach channel under different arrangement types of waterproof wall and the hydraulic characteristics such as longitudinal flow velocity and transverse flow velocity were analyzed on the basis of the 2000t second-line ship lock construction project of Zhuzhou navigation power junction in Xiangjiang River. According to the separate arrangement scheme and the completely-connected arrangement scheme of approach channel, the flow condition problem may exist in the scheme was analyzed. In order to improve the ship navigation and berthing condition, it was proposed that the waterproof wall should be set between the approach channels of the second-line ship lock.