Research on layout of Wudongde Hydropower Station

Wudongde Hydropower Station is the first cascade in the downstream of Jinsha River,and is characterized by large scale,narrow valley and steep banks,large volume of flood with high peak,thick overburden and good rock condition.According to the research on the relationships of dam,power house,flood discharge and energy dissipation structures,the general layout scheme is put forward: the concrete double-curvature arch dam with 5 surface holes and 6 middle outlets for flood discharge;2 spillway tunnels between intake and dam at right bank;natural plunge pool for energy dissipation downstream the dam;underground power plant near mountain on both banks;diversion tunnel near the river side;outlet of left tail water tunnel of power plant at downstream of cofferdam,and 2 tail water tunnels combined with diversion tunnel;outlet of right tail water tunnel at upstream of cofferdam,and the tail water tunnel separated with diversion tunnel.