表孔溢流堰体型优化设计及模型试验验证

摘要

溢流表孔在水库汛期泄洪中作用显著，成功的表孔溢流堰体型设计是保证其功能有效发挥的重要前提。以浯溪口水利枢纽工程溢流表孔堰面为例，论述了堰面曲线设计及因结构布置需要对WES实用堰体型所作的一些改进，同时通过物理模型试验从泄流能力和堰面动水压力两方面验证了表孔溢流堰体型改进设计的合理性。研究成果对类似工程溢流堰体型优化设计具有一定的借鉴和参考价值。%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 over-flow 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 rationali-ty 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.