汾河二库大坝泄洪底孔抗磨及防气蚀措施

Anti-abrasion and Anti-cavitation Mensures for the Bottom of Flood way of Fenhe No.2 Reservoir Dam

汾河二库大坝泄洪底孔担负着水库泄洪排沙任务 ,泄洪底孔水流属高速水流。所以 ,泄洪底孔磨损严重和存在着气蚀问题。二库泄洪底孔采用 C50 特种混凝土 ,并在施工时对表层混凝土的平整度加以控制 。

Flood way bottom of Fenhe No.2 reservoir dam sand of reservoir,and water flow at the bottom of flood way is high speed flow.Therefore,abrasion of flood way bottom is serious and cavitation problem is also existing.As for Fenhe No.2 reservoir,C50 special concrete is adopted at the bottom of flood way,and the smoothness of surface concrete is controlled during construction.Finally,the damage problem happened at the flood way is solved.