水利学报2025，Vol.56Issue(7)：853-861,9.DOI:10.13243/j.cnki.slxb.20240742
自适应库水位变幅的竖缝式鱼道出口优化及通过性分析
Optimization design and passability analysis of vertical slot fishway outlet for self-adapting to water level fluctuation in reservoir
摘要
Abstract
Vertical slot fishways(VSFs)have been one of the popular fishway design types worldwide over the past 30 years.The water depth at the exit section is one of the main factors affecting fish migration during VSF operation.To match the fluctuation of the water depth at the VSF exit section,an optimal VSF design method is proposed here.The outlet section of the optimized fishway consists of three parts:the deep-water section,overflow section,and shallow-water section.Through physical model tests and numerical simulation calculations,the hydraulic characteris-tics of the outlet section of the fishway are studied in detail.The water depth and velocity profiles at the shallow sec-tion are uniform regardless of the water level at the VSF exit.Nevertheless,the hydrodynamic profiles at the deep-water section are non-uniform owing to the backwater effect,which decreases the velocity in the slot.Under different upstream water levels,the overflow section balanced the discharge between the inlet and outlet of the VSF through overflow,which basically satisfies the discharge relationship of a sharp-crested side weir.Although non-uniform con-ditions are present in the deep-water section,hydrodynamic profiles are suitable for migrating fish to pass through.This indicates that the optimized VSF is fish-friendly.The optimal VSF design method has major implications in real-life scenarios where uniform operating conditions are rarely achieved,particularly for daily regulation reservoirs.关键词
竖缝式鱼道/单出口/水位变幅/溢流段/水力特性Key words
vertical slot fishway/single exit section/fluctuation of water level/overflow section/hydraulics分类
建筑与水利引用本文复制引用
郑铁刚,张志广,孙双科,李广宁,柳海涛,温静雅..自适应库水位变幅的竖缝式鱼道出口优化及通过性分析[J].水利学报,2025,56(7):853-861,9.基金项目
国家重点研发计划项目(2022YFC3204203) （2022YFC3204203）
重大工程科研项目(12IJG202400055,2020070604-ky-2021-09,KY20240281) （12IJG202400055,2020070604-ky-2021-09,KY20240281）
