【摘要】 台阶式溢洪道因其显著的消能、掺气效果而倍受工程界的关注。在许多试验研究的基础上,提出了台阶式泄槽溢洪道泄槽及降低护坦式消力池的水力计算方法。台阶式溢洪道泄槽的设计主要包括泄槽倾斜角度、台阶高度和长度确定、泄槽边墙高度确定、台阶上的压强计算及防空蚀破坏措施的确定3部分。尽管台阶式溢洪道受到世界各国水利界人士的强烈关注,并进行了大量的试验研究,但目前对于台阶式溢洪道的系统计算方法研究尚未看到报道,因此,对台阶式溢洪道系统计算方法的研究具有重要的现实意义。更多还原

【Abstract】 Stepped chute spillways have greatly attracted the engineering circles’ attention for their remarkable effects of aeration and energy dissipation. Based on extensive experimental studies, hydraulic computation methods are put forward for the design of the stepped discharge chute and the stilling basin formed by lowering apron. The design of the stepped discharge chute includes 3 respects:① determining the chute’s inclination angle, step height, step width and side wall height;② computing the hydrodynamic pressures on steps;③ determining cavitation erosion prevention measures. Although a lot of experimental studies were conducted on stepped spillways, systematic computation methods for designing stepped spillways have not been reported. Researches on systematic computation methods for stepped spillways are of significance.更多还原