摘要
奋斗鱼道是黑龙江省穆棱河干流上游一座大型竖缝式鱼道,最大工作水头达32.43 m,且上下游水位变幅很大,采用多折回方式布置。通过水工模型试验对奋斗鱼道整体进行了试验研究,对不同水位条件下,鱼道内水流条件的变化进行了研究,经过对比发现,竖缝式鱼道内水深整体受出口水位影响较大,进口段受下游水位影响,电站尾水位变化时,可造成进口段水深变化较大,进而影响鱼道内水流流速,对鱼类上溯形成障碍。通过减缓进口段坡度,增加隔板等措施,可以使水深变化区段增长,从而避免流速的突然变化。
Located in upstream of Muleng river and arranged with multiple foldback, Fendou flshway is the typical vertical slot flshway with 32.43 m maximum water head and large water level change amplitude. Combined with hydraulic physical model, this paper makes a detailed analysis about hydraulic characteristic inside the fishway under different operation conditions. Results show that the water depth inside the fishway is greatly influenced by water level of downstream outlet： the fluctuation of hydropower station tailwater can significantly increase water depth inside the fishway and impact longitudinal velocity near the vertical slot, which could hinder fish reflux. Through slowing down the longitudinal slope of inlet and adding more baffles, the water depth regions can extend and avoid rapid change of velocity.
出处
《中国农村水利水电》
北大核心
2017年第12期204-208,共5页
China Rural Water and Hydropower
关键词
竖缝式鱼道
高水头
竖缝流速
喜好流速
vertical slot fishway
high water head
vertical slot velocity
preference velocity
