清水江白市枢纽—托口枢纽的变动段航道设计最低通航水位研究  

Design lowest navigable water level of channel in fluctuating section from Baishi hub to Tuokou hub on Qingshui River

作　　者：南海龙 乾东岳 李明 NAN Hailong;QIAN Dongyue;LI Ming(Hunan Provincial Communications Planning,Survey&Design Institute Co.,Ltd.,Changsha 410008,China;Tianjin Research Institute for Water Transport Engineering,Key Laboratory of Engineering Sediment,Ministry of Transport,Tianjin 300456,China)

机构地区：[1]湖南省交通规划勘察设计院有限公司,湖南长沙410008 [2]交通运输部天津水运工程科学研究所工程泥沙交通行业重点实验室,天津300456

出　　处：《水运工程》2023年第6期154-159,共6页Port & Waterway Engineering

基　　金：国家重点研发计划项目(2021YFB2600900)。

摘　　要：山区性河流枢纽回水变动段航道因受上、下游枢纽调节以及工程整治方案等多因素影响,水文条件复杂多变,确定设计最低通航水位成为关键性难题。依托清水江白市至分水溪航道建设工程,采用二维水流数值模拟方法,确定了设计最低通航水位的关键数值,并提出按90%通航保证率设计航道工程,取分枯期和汛期两种最不利工况,沿程水位下包线作为设计最低通航水位。研究成果解决了工程的关键问题,可为同类工程建设提供科学依据。Influenced by many factors,such as the regulation of upstream and downstream hubs and the project regulation scheme,the channel in the backwater fluctuating section of mountainous river hubs has complex and changeable hydrological conditions.Therefore,determining the design lowest navigable water level has become a key problem.Relying on the waterway construction project from Baishi to Fenshuixi of Qingshui River,the key values of the design lowest navigable water level are determined by a two-dimensional numerical simulation of water flow.It is proposed that the waterway project is designed according to 90%navigable guarantee rate,taking the two most unfavorable conditions of the dry season and the flood season and using the lower envelope of the water level along the route as the design lowest navigable water level.The research results have solved the key problem of the project and can provide a scientific basis for the construction of similar projects.

关 键 词：回水变动段 设计最低通航水位 数值模拟 航道整治 山区性河流 

分 类 号：U617[交通运输工程—船舶及航道工程]