General layout of Jinping I Hydropower Station

Jinping I Hydropower Station is the controlling project for cascade hydropower development of the Yalong River,its dam is double-curvature arch and the highest one in the world.In the dam site selection,4 dam sites was compared,at last,the Pusiluogou dam site was determined.After full consideration of geologic condition at dam site,high water head of large flood discharge structure,narrow river valley,large underground cavities and technologic difficulties of underground power generation system,the project arrangement scheme was determined.The final scheme is concrete double-curvature arch dam,4 surface holes + 5 deep holes + 2 bottom outlets + plunge pool,and a flood discharge tunnel with pressure flow section connected to free flow section and underground power house on right bank.This paper introduces the project layout and its advantages of Jinping I Hydropower Station.