漫湾水电站泄洪消能方案的选择

Selection of Flood Releasing and Energy Dissipation Structures of Manwan Hyropower Station

The flood releasing structure of Manwan hydropower station consists of five surface spillways, two low-leveled outlets and one spillway tunnel. The structure featured with its frequent functioning, large discharge, great energy and high duration during flood releasing and possibility of energy dissipation by river bend. As a result of comparison with the slit-type flip bucket the double differential diffusion deflecting bucket was selected. A good effect is given by the selected bucket combined with pre-excavation of the erosion pit and protection of water cushion basin by reinforced concrete.