清远水利枢纽消力池底板脉动压强特性试验研究

Experimental study on characteristics of fluctuating pressure on bottom slab of stilling pool for Qingyuan Water Control Project

通过广东省清远水利枢纽工程水工模型试验，研究了消力池底板脉动压强的振幅及优势频率。试验结果显示，消力池底板脉动压强均方根最大值为8．58kPa，脉动压强优势频率在0．002～1．965Hz之间，能量相对集中的频率范围均在2Hz以下。试验研究成果为该大型枢纽的水工设计提供了重要设计参数。

Through the hydraulic model test of Qingyuan Water Control Project in Guangdong, the amplitude and the dominant frequency of the fluctuating pressure on the bottom slab of the stilling pool are studied. The test result shows that the maximum root mean square value of the fluctuating pressure on the bottom slab is 8.58 kPa, while the dominant frequency of the fluctuating pressure is between 0. 002 - 1. 965Hz and the frequency range that energy is relatively concentrated is below 2 Hz. The experi- mental study result provides important design parameters for the hydraulic design of the large sized project.