Study on the influence of vertical seam blockage on the operation of vertical slit fishway
Vertical seam blockage often occurs during the actual operation of vertical slit fishway.The situation of vertical seam blockage in the slit fishway during operation was restored by numerical simulation.Taking the fishway of Laokou Hydraulic Complex as example,analysis was made on the flow velocity,flow pattern and turbulent energy in the fishway under different blocking conditions with the conclusions as follows.When the vertical seam blockage occurs,the flow velocity in the upstream 5～6 pond chambers and downstream 3～4 pond chambers are affected.Af-ter the vertical seam is blocked more than 0.8 h,the flow velocity decreases.The flow velocity increases when the vertical seam is blocked less than 0.8 h,and the maximum flow velocity is 1.77m/s when the degree of blockage is 0.4 h.For the four major Chinese carps,when the vertical seam is blocked up to 0.4 h,it should be cleaned and re-paired in time to ensure the normal operation of fishway of Laokou Navigation Complex.
万方数据
维普
