导流墩布置对岩滩升船机下游口门区通航水流条件影响  

Influence of diversion pier layout on flow conditions in downstream entrance area of Yantan ship lift

作　　者：赵根生 孙佳[2] 张首元 ZHAO Gensheng;SUN Jia;ZHANG Shouyuan(Nanjing Hydraulic Research Institute,Nanjing 210029,China;College of Harbor Coastal and offshore Engineering,Hohai University,Nanjing 210098,China)

机构地区：[1]南京水利科学研究院,江苏南京210029 [2]河海大学港口海岸与近海工程学院,江苏南京210098

出　　处：《水运工程》2024年第11期86-91,共6页Port & Waterway Engineering

基　　金：湖北省重点实验室开放研究基金资助项目(CX2023K18)。

摘　　要：针对岩滩升船机升级改造后口门区水流紊乱,横流、回流强度超标等问题,采用二维数学模型,重点论述导流墩不同布置方式对口门区通航水流条件影响,分析导流墩不同形状、数量和相对间距下的水流流态,对比口门内横向流速、纵向流速及回流流速等水力参数,进一步探究导流墩布置规律,优化导流墩布置方式。结果表明:导流墩对口门区通航水流条件有明显改善作用,在岩滩下游口门区布置7~8个八边形导流墩,且当导流墩的间距和长度之比控制在0.50~1.00范围时,可有效改善岩滩升船机下游口门区通航流态,使其满足船舶安全通航要求。To the problems of water flow turbulence,cross-flow,backflow intensity exceeding the standard in the entrance area after the upgrade and renovation of the Yantan ship lift.This paper uses a two-dimensional mathematical model to focus on the influence of different arrangements of diversion piers on the navigational flow conditions in the entrance area,and analyzes the flow pattern under different shapes,number and relative spacing of diversion piers.By comparing the hydraulic parameters such as transverse flow velocity,longitudinal flow velocity and backflow velocity,the layout law of diversion pier is further explored and the layout mode of diversion pier is optimized.The results show that diversion piers have obvious improvement effect on the navigational flow conditions in the entrance area.The recommended arrangement is 7-8 octagonal diversion piers in the entrance area downstream of the Yantan ship lift,with a spacing-to-length ratio between 0.50 and 1.00.This arrangement effectively improves the navigational flow conditions in the entrance area downstream of the ship lift,meeting the requirements for navigation.

关 键 词：岩滩升船机 下游口门区 通航水流条件 导流墩布置 数值模拟 

分 类 号：U641[交通运输工程—船舶及航道工程]