Energy dissipation and scour control are all the key issues for the design of hydraulic structures. On the basis of the high energy dissipation for the multiple slit-type energy dissipaters (M-STED) developed by the authors, in this work, the characteristics of the scour hole for the M-STED were experimentally investigated through three sets of those physical models with five cases and a scour hole form index was proposed. The results show that, the M-STED results in not only the high energy dissipation but also the mild upstream slope of the scour hole thanks to the scour hole form index of larger than 0.5, which is in favor of the safety of the release works.

中文翻译：

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多个狭缝型耗能器的局部冲刷

能耗和冲刷控制都是水工结构设计的关键问题。在作者开发的多狭缝型消能器（M-STED）的高消能基础上，本工作通过三组物理上的实验研究了M-STED冲孔的特性。提出了具有五个案例和冲孔形式指数的模型。结果表明，由于冲孔形状指数大于0.5，M-STED不仅导致冲孔的高能量耗散，而且导致冲孔上游坡度平缓，有利于脱模工程的安全性。 。