水利水电科技进展Issue(2)：24-29,6.DOI:10.3880/j.issn.1006-7647.2016.02.005
跌坎消力池脉动压强试验
Experimental study on fluctuating pressure of stilling basin with drop sill
摘要
Abstract
In order to thoroughly research the hydrodynamic characteristics of a stilling basin with a drop sill, and provide a reference for its design and protection, the distribution characteristics, amplitude, and spectral features of the fluctuating pressure were studied based on physical model experiments. The experimental results show that the flow condition is the main factor influencing the fluctuating pressure, and the fluctuating pressure coefficient of the stilling basin slab increases and then decreases in the direction of streamflow, before finally stabilizing. The fluctuating pressure of the middle line of the slab is close to that of the side wall, and the maximum fluctuating pressure at these two locations reaches 5. 1% of the total water head. The maximum fluctuating pressure occurs in the region near the chute sidewall extension line in the front of the stilling basin, and it reaches 11. 5% of the total water head. Compared with a traditional stilling basin, the fluctuating pressure of the middle line in the front of the stilling basin significantly decreases, and the maximum difference reaches 55. 2%.关键词
跌坎消力池/水动力特性/脉动压强/功率谱/总水头Key words
stilling basin with drop sill/hydrodynamic characteristic/fluctuating pressure/power spectrum/total water head分类
建筑与水利引用本文复制引用
杨敏,李会平,缑文娟,尹红霞..跌坎消力池脉动压强试验[J].水利水电科技进展,2016,(2):24-29,6.基金项目
国家自然科学基金(51509180) （51509180）
