关键词: 黄金坪水电站, 泄流, 振动测试, 模态分析

Abstract: In view of the environmental vibration caused by spillway discharge in Huangjinping water conservancy project, the vibration of various measuring points under different discharge and gate opening conditions is analyzed through field vibration test. The results show that the vibration effect decreases with the increase of distance from the source, and the vibration effect at the same location increases with the increase of discharge. And, when the three gates discharge with the same opening, the impact on the surrounding area is relatively small. In addition, the first natural frequencies of most buildings in Jinshui village are basically below 9.002 Hz, and the vibration frequencies of all measuring points of dam body during discharge are concentrated in the low frequency range, which may cause resonance phenomenon.

Key words: Huangjinping hydropower station, discharge, vibration test, modal analysis