Study on design schemes of Tingzikou Hydropower Station

Tingzikou Hydropower Station is the only controlling project in main stream of Jialingjiang River,which is mainly for flood control,irrigation,urban and rural water supply and power generation,and gives consideration to navigation,sediment trapping as well.Lijiazui is selected as dam site through comprehensive comparison in the early period of design.In the engineering layout design,the dam axis of gravity dam and local materials dam and their layout are analyzed comparatively.The topography,geology,construction materials,layout,flood discharge and energy dissipation,construction,dispatching operation,environmental harmony and investment of the two dam types are taken into consideration.It is concluded that the gravity dam is superior in layout,flood discharge and energy dissipation and investment;therefore,gravity dam is recommended as the basic dam type of water-retaining structure.