云龙水库溢洪道阶梯消力池的设计

Stepped energy dissipater design for the spillway of Yunlong Reservoir

云龙水库溢洪道布置于天然垭口,受地形条件限制,堰后泄槽陡坡段急剧跌落 28 3m,紧接转角为 42 67°的转弯段,水力条件很差,必须在陡坡泄槽段进行消能. 本工程陡坡泄槽段设置 5级阶梯消力池消能,通过水工模型试验验证,消能效果较好,能使水流平稳通过转弯段.

The spillway of Yunlong Reservoir is located at a natural saddle of one of the river banks.Because of limited topographical conditions,there is a 28. 3m sudden chute drop behind the saddle and after that the chute immediately turns abruptly at a angle of 42. 67°.For these poor hydraulic conditions the energy dissipation here has to be carried out in the steep chute itself.Five stepped energy dissipaters are disposed along this steep chute.The data obtained have already shown very satisfactory results and stable flow movement for this steep bend chute.