长洲四线并列船闸运行方式对下游引航道水流条件的影响

长洲水利枢纽通航建筑物采用四线并列船闸布置,其引航道水流条件受船闸布置及充泄水影响而十分复杂。采用物理模型试验与数学模型计算相结合的手段,对长洲船闸不同下游水位下船闸泄水对引航道水流条件的影响进行研究,针对存在的水力学问题,结合长洲船闸的特点提出目前最为便捷有效的非工程措施——优化船闸运行方式,并最终确定了船闸运行的控制下游水位及相应的运行方式,为船闸设计与运行管理提供了依据。

Influence of lock emptying of Changzhou four-paralleling-lane locks on flow conditions in the downstream approach channels

The navigation structure of the Changzhou hydro-junction adopts a four-paralleling-lane type,and the flow conditions in the approach channels are quite complicated due to its arrangement and the lock filling & emptying courses.By physical model tests and numerical computations,we study the influence of lock emptying under different downstream water levels on the flow conditions in the downstream approach channels.Considering the lock features,we propose the currently most convenient and effective non-structural measure,i.e.to optimize the locks’ operation modes so as to solve the hydraulic problems.Finally,we determine the suggested controlling downstream water levels and their relating lock operation modes based on the study,which can be used for the lock design and management.