岷江龙溪口航电枢纽工程船闸总体布置与通航条件研究

General arrangement and navigation conditions of ship lock in Longxikou Navigation-power Junction project of Minjiang River

针对龙溪口航电枢纽船闸工程建设过程中出现的居民渡河安全、船闸临时通航和下游河床下切等问题,采用二维数学模型对工程河段施工期下游水流条件和导流第三期工程第一个汛期(三期一汛)船闸上引航道通航水流条件进行数值模拟。结合工程的具体情况,提出新民客渡临时过渡方案。结果表明,下游河床下切预判数据、三期一汛枢纽调度和船闸运行方案保证了施工期工程河段两岸居民的渡河安全,有效解决了河床下切对船闸通航的影响,确保三期一汛岷江航道的畅通。

In the ship lock construction of the Longxikou Navigation-power Junction project,problems may occur,such as the safety hazard of residents crossing the river,temporary navigation of the ship lock,and downstream riverbed downcutting.To address these problems,we employ a two-dimensional mathematical model to numerically simulate the downstream flow conditions of the project reach during the construction period and the navigable flow conditions of the upper approach channel of the ship lock in the first flood season of the third phase project.Combining with the specific situations of the project,we propose a temporary scheme for Xinmin passenger ferrying.The results show that the prediction data of downstream riverbed downcutting,the operation plan of the first flood season of the third phase,and the operation plan of the ship lock ensure the safety of the residents on both sides of the river during the construction period.The scheme effectively solves the influence of riverbed downcutting on the ship lock navigation,guaranteeing the unimpeded channel of the Minjiang River during the first flood season of the third phase.