大源渡航电枢纽二线船闸下游通航条件优化试验研究

Optimization of Navigation Flow Condition in the Downstream of the Second Ship Lock of Dayuandu Navigation and Electricity Junction

为改善大源渡航电枢纽二线船闸下游通航水流条件,采用整体物理模型试验,研究了在有支流入汇的弯曲河段拟建二线船闸下游引航道口门区的通航水流条件及影响因素。基于设计方案的多次优化比选试验,提出一种在下游口门区外侧布置隔水墙的隔挡方案,该布置方案满足下游口门区船舶(队)安全航行及河段行洪能力的要求,较好地解决了该枢纽二线船闸下游通航问题,为类似工程提供科学依据和借鉴。

Overall physical model test was carried out in the aim of improving the navigation flow condition in the downstream of the second ship lock of Dayuandu navigation and electricity junction. The navigation flow condition and its influencing factors in the entrance area of the approach channel of the second ship lock in winding river with tributaries were analyzed. Through many optimization tests and comparisons, a parapet project with a water-resisting wall outside the entrance area in the downstream was proposed. This optimized project meet the requirements of navigation and flood discharge capacity in the entrance area, and the problem of navigation in the shiplock＇ s downstream is solved. The research provides a scientific basis and reference for similar projects.