台阶式溢洪道的消能问题

The Research on Energy Dissipation on Stepped Spillways

阐述了台阶式溢洪道的水流流况分类 ,叙述了在一定斜坡角度情况下的试验研究结论 ,并分析了台阶段各流况的试验资料及下游消力池水跃消能的试验资料。结果表明 ,台阶式溢洪道的总消能率可达 95%左右 ,其中台阶段消能率占 85%以上 ,下游水跃消能只占总能量的 1 0 %左右 。

This paper describes the flow types firstly, and respectively presents the research results on stepped spillways at a certain slope, and puts emphasis on analyzing experiment data under different flows and the ones of energy dissipation of the water jump created in downstream stilling basins. The research proves that energy dissipation ratio on stepped spillways can amount to 95%, and energy dissipation ratio on steps shares its 85%, while energy dissipation ratio of the water jump created in downstream stilling basins can only share 10% of the total. Results show that stepped spillways works effectively for the energy dissipation.