西北水电Issue(3)：38-44,7.DOI:10.3969/j.issn.1006-2610.2025.03.007
水电站泄洪放空洞高水头、大型化闸门水力与流激振动特性研究
Research on Hydraulic and Flow-Induced Vibration Characteristics of High-Head and Large-Scale Gates in the Flood Discharge and Emptying Tunnel of Hydropower Stations
摘要
Abstract
To address issues such as vibration,insufficient air supply,and gate slot cavitation caused by high water heads in the flood dis-charge and emptying tunnels of hydropower stations,this study focuses on the inlet gates of the flood discharge and emptying tunnel at the Maerdang Hydropower Station.Through hydraulic and hydroelastic model tests,the hydraulic and flow-induced vibration characteristics of these gates are investigated.The results show that:when the service gate is at a small opening,the notch behind the emergency gate provides independent air supply;when the service gate is at a large opening,the notch behind the emergency gate and the service gate slot jointly sup-ply air.Research on the dynamic water closing characteristics indicates that the maximum closing force shows a trend of"first stabilizing and then increasing"with the increase of the opening degree.The negative pressure effect significantly exacerbates the closing load under the con-dition of a large opening of the service gate,with a maximum increase of 32.16%.Under the same opening degree,the average vibration dis-placement of the service gate gradually increases with the rise of the upstream water level.Vibration tests reveal that the main frequencies of the dynamic strain of both types of gates are concentrated in the range of 0.007～0.013 Hz,and the vibration response is mainly induced by fluctuating water loads.The research findings can provide a reference for the design and renovation of hydraulic gates.关键词
水工钢闸门/设计方法/水力学模型试验/水弹性模型试验/流激振动Key words
Hydraulic steel gate/design method/hydraulic model test/hydroelastic model test/flow-induced vibration分类
建筑与水利引用本文复制引用
翟超,韦晨阳,李岗,李会军..水电站泄洪放空洞高水头、大型化闸门水力与流激振动特性研究[J].西北水电,2025,(3):38-44,7.基金项目
陕西省自然科学基础研究计划项目(2022JM-234) （2022JM-234）
