洪江枢纽扩建船闸下游通航条件试验研究  

Experimental study on navigation conditions downstream of Hongjiang junction expansion shiplock

作　　者：杨峰[1] 普晓刚[2] 金辉 王鑫 闫涛[2] YANG Feng;PU Xiao-gang;JIN Hui;WANG Xin;YAN Tao(Hunan Provincial Transport Department Planning and Project Office,Changsha 410116,China;Tianjin Research Institute for Water Transport Engineering, Key Laboratory of Engineering Sediment, Ministry of Transport, Tianjin 300456, China)

机构地区：[1]湖南省交通运输厅规划与项目办公室,长沙410116 [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：《水道港口》2021年第1期84-88,共5页Journal of Waterway and Harbor

基　　金：国家自然科学基金(51809130);中央级公益性科研院所基本科研业务费专项资金资助项目(TKS190406);中央级公益性科研院所基本科研业务费专项资金资助项目(TKS190104)。

摘　　要：建立了洪江枢纽整体物理模型,对洪江扩建船闸布置及下游航道通航条件进行多方案试验。试验结果表明,坝址所在位置下游河势向右微弯,且逐渐压缩,扩建船闸闸室较长,引航道实体导流堤直线顺延后,导流堤对有效河宽造成大幅缩窄,引发船闸下游口门区斜流流速大、流态复杂,通航条件不能满足船舶安全航行要求。优化方案充分利用船闸下游弯道河段右岸河道存在大范围的缓流区,将下游引航道长直堤设置为折线型,减少导流堤对主河道过水断面的压缩,降低河道流速,改善口门区水流条件;同时顺应下游河势向右岸调整航线,达到了改善船闸下游航道通航条件目的。研究成果可为同类项目提供借鉴参考。The overall physical model of Hongjiang hydro-junction was established.The layout of Hongjiang shiplock and the navigation conditions of downstream channel were tested.The test results show that the downstream river regime at the dam site bends slightly to the right,and gradually compresses,the extended lock chamber is longer,the straight line of the approach channel entity diversion dike is straight,the effective river width is greatly narrowed by the diversion dike,which leads to the large flow velocity and complex flow pattern in the downstream entrance area of the lock,and the navigation conditions can not meet the requirements of safe navigation of ships.The optimization scheme makes full use of the large-scale slow flow area in the right bank of the downstream bend reach of the ship lock.The long straight dike of the downstream pilot channel is set as a broken line to reduce the compression of the diversion dike on the cross-section of the main river channel,reduce the flow velocity of the river and improve the flow conditions in the entrance area.At the same time,the route is adjusted to the right bank according to the downstream river regime,so as to improve the navigation conditions of the downstream channel of the lock similar projects provide reference.

关 键 词：扩建船闸 通航条件 折线导流堤 模型试验 

分 类 号：U617[交通运输工程—船舶及航道工程]