岷江龙溪口航电枢纽工程引航道口门区通航水流条件影响及对策

Influence of navigable flow conditions and countermeasures for approach channel at entrance area of Longxikou Navigation-power Junction project in Minjiang Rive

岷江龙溪口航电枢纽工程是岷江乐山—宜宾段航道等级提升的第4级。该工程引航道通航水流条件是保障四川重大件水路运输通道安全的重要因素。采用1:100整体水工模型进行试验,分析各种通航工况下的通航水流条件,并针对上引航道通航水流条件不满足规范要求存在的问题,提出改善引航道口门区通航水流条件,提高最大通航安全流量的综合性工程措施,较好地解决了枢纽上游引航道及口门区的通航安全问题,研究成果可作为类似工程借鉴和参考。

Longxikou Navigation-power Junction project in Minjiang River is the fourth level of the upgrade of the waterway from Leshan to Yibin of Minjiang River,and the navigable flow condition of the approach channel of the project is an important factor to ensure the safety of heavy and large waterway transportation channels in Sichuan.This paper uses the 1100 physical hydraulic model to conduct tests and analyzes the navigable flow conditions under various navigable conditions.In view of the problem that the navigable flow conditions of the upper approach channel do not meet the requirements of the code,the paper proposes comprehensive engineering measures to improve the navigable flow conditions of the approach channel at the entrance area and increase the maximum navigable safety flow.It solves the navigation safety problem of the upper approach channel and entrance area of the junction,and the research results can provide a reference for similar projects.