摘要
介绍三峡水利枢纽溢流坝段与厂房坝段之间导墙的动水压力试验研究情况。给出了不同库水位泄洪工况下，水流作用在导墙上的时均压强、脉动压强及他们的分布规律、脉动频率的统计特性等试验成果。认为：时均压力的分布基本符合静水压力分布的规律；脉动压力的幅值在漩滚区较大，沿水深的分布是近表和近底较小、中间较大；导墙边壁上水流的压力脉动是一种窄带低频脉动。
The research results of hydrodynamic pressure acting on the guide wall between the power station and spillway of the Three Gorges Project are presented. In the paper, mean pressures, fluctuation pressures and its distribution law, and statistic properties of fluctuation frequency, etc., under different water level conditions, are provided. The results show that the distributions of mean pressure are principally corresponding with those of static pressure; the amplitudes of fluctuation pressure are the largest at rotational zone, and, in the water depth direction, the values near the water surfaec and bottom are smaller than those of middle section; the flow pressure fluctuation on the guide wall is narrow-band and low frequency one.
出处
《长江科学院院报》
CSCD
北大核心
1996年第1期14-20,共7页
Journal of Changjiang River Scientific Research Institute
基金
长江科学院基金
关键词
导墙
脉动压力
脉动频率
时均压力
guide wall
mean pressure
fluctuating pressure
fluctuation frequency
