溢洪道中墩水翅的消减研究

Subtractive Research on the Water Wing behind the Central Pier of Spillway

针对消减溢洪道中墩后水翅问题是溢洪道设计中的难题,以印度尼西亚Jatigede大坝溢洪道为例,探讨了水翅产生的原因和影响因素,提出了一种新的中墩体型以解决溢洪道中水翅问题;并采用数值模拟和模型试验两种方法验证了新中墩体型在消减水翅方面的明显作用,可为溢洪道中墩优化设计提供依据。

It is a difficult problem for the spillway design to annihilate the phenomenon of the water wing behind the central pier of spillway. By discussing the causes and influence factors of the water wing in the spillway of Indonesia Jatigede dam, this paper puts forward a new shape of the central pier to solve this problem. It validates the effect of the new shape on annihilating the water wing together with numerical simulation and model test. The results can provide scientific basis for the design of the central pier of spillway.