在大型导流洞改建为永久利用泄洪洞方面，泄洪、消能和空化之间的协调是最重要的问题之一。在以往的设计中，在满足较大的泄量和消能量条件下，通常泄洪洞还要满足σｆ＞σｉ，以免发生空化空蚀。本文提出的一种新型无空蚀旋涡孔板消能工，通过对水体的控制，允许空化仅在水体内部存在而不致对洞壁空蚀破坏，因此，可以加大消能量，提高泄流能力，使工程设计更为经济安全。本文对此种消能工（共６种方案）进行了研究，包括Ｑ～Ｈ关系，μ～Ｈ关系，空化和消能特性等，取得了较好的成果。 Coordination between flood diversion, energy dissipation and cavitation is one of the most important issues in the conversion of large diversion tunnels to the permanent use of flood spillways. In the past design, to meet the larger discharge and energy dissipation conditions, usually flood discharge caves also meet σf> σi, so as to avoid cavitation cavitation. In this paper, a new non-cavitation vortex plate energy dissipator, through the control of the water body, allowing cavitation only exists within the water body without cavitation damage to the wall, so you can increase the energy dissipation and increase discharge Ability to make engineering more economical and secure. In this paper, we studied a total of six kinds of energy dissipaters (including Q-H, μ-H, cavitation and energy dissipation) and achieved good results.