明渠闸门回水和出流规律研究  

Study on Backwater and Outflow Law of Open Canal Gate

作　　者：于洪亮[1] 江如春 韩洪发 YU Hongliang;JIANG Ruchun;HAN Hongfa(Jiangsu Jiangdu Water Conservaney Project Management ffice,Yangzhou 225200,China)

机构地区：[1]江苏省江都水利工程管理处,江苏扬州225200

出　　处：《河南水利与南水北调》2022年第6期89-90,102,共3页Henan Water Resources & South-to-North Water Diversion

摘　　要：江都东闸作为南水北调东线源头配套工程,其出流规律、水力要素和运行控制的研究具有十分重要的意义。为了控制下游水位,水闸的安装必会造成水流受阻,引发上游的水位增加,造成回水等问题。因此,为了模拟此类渠道上的水流,文章基于圣维南方程作为控制方程,并对方程进行积分,探究江都东闸在不同水闸开度下的出流特性和回水程度。结果表明,相对于1.00 m的开度,0.50 m水闸开度使得回水距离从10 km剧增至25 km。最大允许水深为Hb=7.044 m,最小允许闸门开度Hg随着Q的增加而增加,当流量为500 m3/s时,最小闸门开度可以达到2.45 m。As the supporting project of the east route of the South-to-North Water Diversion Project, the research of the flow law,hydraulic elements and operation control of the east gate of Jiangdu is of great significance. In order to control the downstream water level, the installation of the sluice will cause water flow obstruction, leading to an increase in the upstream water level and causing backwater and other problems. Therefore, St. Venant Equations is used as the governing equation, and the equation is integrated to explore the outflow characteristics and backwater degree of Jiangdu East Sluice under different sluice opening degrees. The results show that compared with the opening of 1.00 m, the opening of 0.50 m makes the backwater distance increase sharply from 10 km to25 km. The minimum allowable water depth is Hb=7.044 m, and the minimum allowable gate opening Hgincreases with the increase of Q value. When the flow is 500 m3/s, the minimum gate opening reaches 2.45 m.

关 键 词：水闸开度 最小闸门开度 回水 水面线 

分 类 号：TV91[水利工程—水利水电工程] U61[交通运输工程—船舶及航道工程]