Design of Discharge Dissipation For Goupitan Hydropower Station

The river valley at the dam site of Guopitan Hydropower Station is very narrow.The flow of its food pick is huge,its biggest discharge power is up to 42,000MW,more than ones of most high dams at home and abroad.Therefore,the design of discharge,dissipation and erosion control is one of the key technology problems of the project.Comparing several schemes and researching hydraulic model test,the layout scheme has been recommended that discharge is through orifices on the dam body and a spillway in the bank,cushion dissipater is set out under the dam,pre-excavating impact cavity and bucket dissipation are used.