水利水电技术2017，Vol.48Issue(7)：85-89,135,6.DOI:10.13928/j.cnki.wrahe.2017.07.015
鱼类下行过坝的导鱼栅系统设计及试验研究
Experimenal study and design of fish-guiding railings for fish passing downwards over dam
摘要
Abstract
By taking Longkaikou Water Control Project as the study case,a scheme for assisting fish to pass downwards over dam is proposed herein.In the scheme,the layout location of the fish-guiding railings system is determined at first in accordance with the characteristics of the discharge structure of the dam,and then an indoor model experiment is carried out,by taking Aristichthysnobilis as the object,with the control variable method and through the selecting four kinds of blade angles (15°,30°,45°and 90°) and three kinds of the layout angles (15°,30°and 45°) of the fish-guiding railings,so as to determine the optimal operation condition.The study result shows that it is best to lay the fish-guiding railings system at the irrigation outlet of the project.In the experiment,when the layout angle is controlled to be 30°,the fish passing rates under the conditions of four blade angles are 53％,95％,59％ and 72％ respectively,while the fish passing rates under the conditions of three layout angles are 53％,95％ and 41％ respectively when the blade angle is controlled to be 30°.Therefore,the efficiency of the fish-guiding railings system from assisting fish to pass downwards is the highest with the passing rate of 95％ when both the blade angle and the layout angle are simultaneously to be 30°.The study result can provide a reference for the design of the similar fish-guiding railings system in China.关键词
导鱼栅/模型试验/龙开口水利枢纽/鱼类洄游Key words
fish-guiding railings/model experiment/Longkaikou Water Control Project/fish migration分类
建筑与水利引用本文复制引用
李祖祥,李卫明,艾志强..鱼类下行过坝的导鱼栅系统设计及试验研究[J].水利水电技术,2017,48(7):85-89,135,6.基金项目
国家自然科学基金青年科学基金项目(51309139) （51309139）
