Study on Shape Optimization of Construction Diversion Tunnel Outlet of Zambezi River Batukai Hydropower Station
Based on the physical model test,the optimization of the outlet shape of the diversion tunnel for the construction of Batukai Hydropower Station is studied.Through the comparative analysis of multi-scheme tests,the recommended scheme of straight ridge+right angle+right outlet angle+left straight wall is finally proposed,which can better solve the problems of downstream river channel erosion and downstream open channel flow pattern,so that the downstream river channel erosion depth and downstream open channel water wing are greatly reduced,and the downstream river channel scour pit position is far away from the downstream cofferdam and the end of the diversion tunnel nose.
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