红水河2025，Vol.44Issue(3)：19-24,31,7.DOI:10.3969/j.issn.1001-408X.2025.03.004
大花水水电站中孔闸墩振动及改善措施研究
Vibration and Mitigation Measures for Middle Outlet Piers of Dahuashui Hydropower Station
张天吾 1涂洪波 1汪从彬 1覃贵生 1卢修迪 2赵建平3
作者信息
- 1. 贵州乌江清水河水电开发有限公司,贵州 贵阳 550002
- 2. 中国电建集团贵阳勘测设计研究院有限公司,贵州 贵阳 550081
- 3. 南京水利科学研究院,江苏南京 210029
- 折叠
摘要
Abstract
To address the vibration issues of the middle outlet piers during flood discharge at Dahuashui Hydropower Station,the VOF model is employed to numerically simulate the hydraulic characteristics during the flood release process.Key hydraulic parameters including flow patterns,velocity distribution,pressure variations,and cavitation numbers are analyzed under different gate openings.The study reveals that when the gate is at a large opening,the lower edge of the water nappe contacts the bottom slab in the narrow slot section,causing turbulent flow and generating significant unstable hydrodynamic forces on the sidewalls and bottom of the piers,thereby inducing vibrations.A mitigation measure involving the addition of air vents to the middle outlets is proposed.Numerical simulations demonstrate that this measure enhances air intake in the bottom cavity,stabilizes the trajectory of the water nappe,and effectively reduces vibration amplitudes.This research provides theoretical insights for resolving vibration issues in hydropower station flood discharge outlets and holds significant implications for ensuring flood release safety and dam stability.关键词
水电站泄洪/闸墩振动/VOF模型/数值模拟/通气孔风速Key words
hydropower station flood discharge/pier vibration/VOF model/numerical simulation/vent hole air velocity分类
建筑与水利引用本文复制引用
张天吾,涂洪波,汪从彬,覃贵生,卢修迪,赵建平..大花水水电站中孔闸墩振动及改善措施研究[J].红水河,2025,44(3):19-24,31,7.
