Summary on optimizing design of the lianhua hydropower station

摘要

In technical and construction design phase of the LIANHUA HYDROPOWER STATION, a great deal of the optimizing design was carried out, through the demonstration on investigation, design and testing, after revising primary design. Major measures were: took foundation excavation materials for seepage controlling materials of the core of the second dam; grouting gallery of dam foundation of the second dam was canceled; chute size of spillway was lessened; concrete lining was used instead of steel lining in the draft tube; optimizing the layout of the power tunnel intake; diversion tunnel was used shotcrete and anchor supports instead of reinforcement concrete lining; simple cylinder surge tank was turned into reluctance double circle arc type to be initiate firstly in China; optimizing design of high voltage system in the power station electricity use. The optimizing design of the Lianhua Hydropower Station has a good advantage in saving investment and speeding up construction, and has advanced to generate for two years.