阶形溢洪道上的可能的高效消能意味着下游消力池尺寸的大大减少。在表面浅层水流条件下，对这样的溢洪能量损 失量进行了实验性检测，这些溢洪道的阶梯数量适中．宽度与高度的比率为０．７。试验结果表明，根据因次分析，控制 能量消耗的最重要的参数是流经溢洪道水流的临界深度与台阶高度之比Ｙｃ／ｈ 和台阶数量Ｎｏ所测试的Ｙｃ／ｈ值小 时．消能最高，接近整数，并随着Ｙｃ／ｈ的增加而减小。对于一个特定的Ｙｃ／ｈ来说，消能随Ｎ而增加。把这些结果与台 阶数目多的早期调查结果进行了比较。为台阶尺寸的通常使用范围，在能量损失和参数Ｙｃ／ｈ之间建立了一个总的 关系，它在实际应用中是很有用的。 The possible efficient dissipation of stepped spillways means a significant reduction in the size of the downstream sump. Under surface shallow water flow conditions, such spillway energy losses were experimentally tested, and the number of spillway ladders was modest. The ratio of width to height is 0.7. The experimental results show that the most important parameter to control energy consumption is the hourly rate of Yc / h measured by the ratio of the critical depth to step height of the flow passing through the spillway and step number No. Energy dissipation highest, close to the integer, and with Yc / h increases and decreases. Energy dissipation increases with N for a given Yc / h. The results were compared with earlier findings of the more stairs. For the usual use of the step size, a general relationship between the energy loss and the parameter Yc / h is established, which is useful in practical applications.