开通闸条件下船闸安全运行试验

采用物理模型试验对船闸开通闸的安全运行条件进行研究,给出不同上下游潮位差条件下闸室及引航道区域的水流流态、流速和启闭机受力规律,并根据试验结果建立不同潮位差与最大纵向流速的关系式,提出开通闸安全运行条件的确定方法。该方法以上下游潮位差为控制条件,以流态、最大横向流速、最大纵向流速、最大启闭机受力作为船闸开通闸安全运行的判别指标,综合确定开通闸安全运行的潮位差条件;焦港船闸的实例应用表明,其开通闸运行安全条件为上下游潮位差处于-0.37~0.39 m之间。

Experimental study on the safe operation of ship lock running as an open channel

In this paper, physical modelling tests are performed to study the safe operation of the ship lock running as an open channel, in which the flow regime, flow velocity and hoist force at different tide levels of the upstream and downstream are modelled for the lock chamber and approach channel region. Based on the test results, the relationship between tide level difference and the maximum longitudinal velocity is established. Moreover, a method is proposed to determine the safe operation conditions of the open ship lock, in which the tide level difference between the upstream and downstream is taken as the control condition, and the flow regime, the maximum transverse flow velocity, the maximum longitudinal flow velocity and the maximum hoist force are taken as judging indexes. The tide level difference is thus determined for the safe operation of the ship lock by combining all these judging indexes. The case study for the Jiaogang ship lock shows that, a tide level difference of -0. 37 m to 0. 39 m between upstream and downstream is requested to ensure its safe operation.