EFFECT OF INSTALLATION OF FISHWAY ON FLOW CHARACTERISTICS AROUND WEIR
In this paper, the flow condition downstream of a trapezoidal weir with the protruded fishway has been clarified for several stages of discharge. Also, the effects of the location and the size of the fishway on flow characteristics below the weir have been shown. By installing the protruded fishway at the weir, the flow condition immediately downstream of the weir for several flood stages becomes either symmetric flow or asymmetric and unstable flow. The hydraulic condition for the formation of asymmetric and unstable flow has been shown. By installing the steps on the downstream face of the weir, the flow condition around the fishway is stabilized, and the steps are effective for the improvement of the flow condition immediately downstream of the weir with the protruded fishway during flood stages. Further, the example of the protruded fishway with the installation of the steps has been introduced.
flood control over-hanged fishway steps weir
Youichi Yasuda Iwao Ohtsu
College of Science and Technology, Nihon University Tokyo, Japan
国际会议
第16届亚太地区国际水利学大会暨第3届水工水力学国际研讨会(16th IAHR-APD Congress and 3rd Symoposium of IAHR-ISHS)
南京
英文
2009-2013
2008-10-20（万方平台首次上网日期，不代表论文的发表时间）