低水头缓坡溢洪道挑坎体型优化试验研究  

Experimental study on flip bucket optimization of spillway with low water head and gentle slope

作　　者：代尚逸[1] 刁明军[1] 袁晓龙[1] 

机构地区：[1]四川大学水力学与山区河流开发保护国家重点试验室,成都610065

出　　处：《西南民族大学学报（自然科学版）》2013年第2期233-236,共4页Journal of Southwest Minzu University(Natural Science Edition)

摘　　要：某低水头电站因工程需要采用的缓坡溢洪道挑流消能效果不理想,对右岸岸坡和河床冲刷较为严重.试验研究了两种挑坎体型下出坎水舌形态、落水点及对下游河床的冲刷,推荐采用的差动坎方案能使水流纵向扩散更充分,减轻水流对下游的冲刷,消能效果显著.论文对该类工程泄洪消能设施布置原则进行了总结,对类似工程有借鉴意义.The energy dissipation of ski-jump type is adopted in a hydropower station, but the effect of energy dissipation is not good because of the low water head and gentle slop of spillway. Meanwhile, the right bank and the riverbed are scoured seriously. The shape ofnappe, the position of splash and the scouring of the bed are experimented. It shows that slotted flip bucket is advanced in longitudinal diffusion flow, scour of bed and effect of energy dissipation. The paper summarizes the principle of energy dissipation facilities layout, which has guiding significance for similar projects.

关 键 词：低水头 缓坡度 溢洪道 挑坎 冲刷 差动坎 

分 类 号：TV131.4[水利工程—水力学及河流动力学]