吉林九站松花江大桥河段航道整治方案研究  

Study on channel regulation scheme of Songhua River Bridge section of Jilin Jiuzhan Station

作　　者：黄振祥 王涛 廖江花[1] 刘辛愉 HUANG Zhenxiang;WANG Tao;LIAO Jianghua;LIU Xinyu(National Engineering Research Center for Inland Waterway Regulation,Chongqing Jiaotong University,Chongqing 400074,China;Changjiang Chongqing Harbour and Waterway Engineering Investigation and Design Institute,Chongqing 401147,China)

机构地区：[1]重庆交通大学国家内河航道整治工程技术研究中心,重庆400074 [2]长江重庆航运工程勘察设计院,重庆401147

出　　处：《水道港口》2023年第4期604-610,共7页Journal of Waterway and Harbor

基　　金：重庆市自然科学基金项目(cstc2021jcyj-msxmX0490)。

摘　　要：吉林市九站松花江铁路大桥桥区河道地形起伏大,枯水期航道尺度不足,水位落差集中,存在明显的陡比降。加之桥区临时建筑物未拆除,导致过水断面剧烈收缩,形成急流,严重碍航。采用二维水流数学模型对整治方案进行了计算分析。结果表明:扩大卡口断面和航槽疏浚不能有效解决该河段陡比降的问题,而采用复式断面对桥下游边滩进行开挖可较好地调整水流流态,降低流速,消除陡比降,通航条件较好,可为桥区河段急险滩整治提供借鉴。The river channel near the Songhua River Railway Bridge in Jiuzhan,Jilin City is characterized by undulating terrain,insufficient channel capacity during the dry season,significant water level fluctuations,and obvious steep gradient.In addition,the temporary structures in the bridge area have not been removed,resulting in sharp contraction of the overflow section and hindering navigation.A two-dimensional flow mathematical model was used to calculate and analyze the regulation scheme.The results show that the expansion of bayonet section and channel dredging can not effectively solve the problem of steep gradient of the river section.However,excavation of the downstream beach area with a compound section can better adjust the flow regime,reduce the flow rate,eliminate the steep gradient,and improve navigation conditions.This paper can provide a reference for the regulation of rapids and hazard in the river section adjacent to the bridge area.

关 键 词：桥区整治 航道整治 急险滩 陡比降 复式断面 数学模型 松花江 

分 类 号：U617[交通运输工程—船舶及航道工程]