葛洲坝三江下引航道水位波动特性及其影响分析  

Analysis on water level fluctuation characteristics in Sanjiang lower approach channel of Gezhouba and its influence

作　　者：庞正芳 胡合欢 谢齐 王付杰 王俊 PANG Zhengfang;HU Hehuan;XIE Qi;WANG Fujie;WANG Jun(Changjiang Yichang Waterway Bureau,Yichang 443000,China)

机构地区：[1]长江宜昌航道局,湖北宜昌443000

出　　处：《人民长江》2022年第5期227-231,共5页Yangtze River

摘　　要：为了探明葛洲坝船闸泄水对三江下引航道内水位变化以及船舶通航的影响,通过原型观测及统计分析的方式研究了葛洲坝三江下引航道水位波动特性。基于葛洲坝水利枢纽运行初期的观测资料和三江下引航道两岸沿程流态情况,在三江下引航道两岸沿程对称布设9对水尺,对葛洲坝2号、3号船闸不同泄水组合下的水位进行同步观测。结果表明:当两闸联泄间隔在0~8 min时,水体势能呈叠加效果,8 min之后水体势能呈抵消效果;试验观测到最低波谷达0.75 m,枯水期两闸联泄时间间隔宜大于8 min;船闸泄水后14~38 min,三江水位低于庙嘴站水位,对通航产生不利影响,应加强交通组织和航道观测。In order to explore the influence of ship lock discharge on water level change and ship navigation in the Sanjiang lower approach channel of the Gezhouba Hydro-complex,the water level fluctuation characteristics in the approach channel were studied by prototype observation and statistical analysis.Based on the observation data at the early operation stage of the Gezhouba Hydro-complex and the flow pattern along the two sides of the approach channel,nine pairs of water meters were symmetrically arranged along the two sides of the approach channel,and the water levels in the channel under different discharge combinations of No.2 and No.3 locks were observed synchronously.The results showed that when the interval time between the two locks was 0~8 minutes,the water potential energy was superimposed,while the water potential energy was offset after 8 minutes.The minimum trough observed by the prototype observation was 0.75 m,and the interval time between the two locks should be greater than 8 minutes in dry season.Within 14~38 minutes after the lock discharge,the water level in the Sanjiang Station was lower than that of Miaozui Station,which had a negative impact on navigation,and traffic organization and channel observation should be strengthened.

关 键 词：船闸泄水 下引航道 水位波动 原型观测 葛洲坝水利枢纽 

分 类 号：U641[交通运输工程—船舶及航道工程]