关键词: 表孔, 堰型设计, 泄流能力, 空化空蚀, WES实用堰, 浯溪口水利枢纽

Abstract:

The surface-outlet of overflow weir plays a key role in flood discharge during the flood season, and a successful body shape design for surface-outlet overflow weir is a premise to ensure the effective function. Taking the surface-outlet overflow weir of Wuxikou hydro-junction project as a case, the improvement of the original overflow weir body shape is made due to the weir surface curve design and structural arrangement. And then, the physical model test was carried out to verify the rationality and effectiveness of the weir body shape designs from the aspects of discharge capacity and hydro-dynamic pressure on the weir surface. The research results can provide reference for overflow weir shape design in similar projects. 

Key words: surface-outlet, design of weir body, discharge capacity, cavitation, WES weir, Wuxikou hydro-junction project