水电站排沙廊道体型的优化

Type optimization of flush gallery in hydropower station

以大朝山水电站排沙廊道的１：５０物理模型为依托，通过对正向廊道、反向廊道和双向廊道的体型优化试验，从廊道的排沙效果、水力特性和磨损强度等，论述了廊道的平面布置以及孔口高程、尺寸和导流角的确定。提出了可供设计部门采用的双向排沙廊道的优化体型。

Depending on the 1/so large scale physical model of flush galleries of Dachaoshan hydropower station,type optimization tests of forward direction,reverse direction and bidirectional flush galleries were carried out.On the part of sand escaping effect, hydraulic character and wear strength etc.,the general layout,opening elevation, dimension and the setting standard of the diversion angle of flush galleries are discussed. Finally,optimized bidirectional flush galleries adequate and acceptable to design department are proposed.