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鉴于台阶式溢洪道的研究多集中于台阶尺寸﹑坡度﹑流态﹑消能等方面,而对台阶本身的布置形式研究很少,提出了新的过渡式台阶溢洪道布置形式,采用紊流数值模拟方法研究了不同坡度﹑不同单宽流量以及不同过渡形式下的过渡式台阶溢洪道的水力特性。结果表明,与连续等高的台阶溢洪道相比,在相同条件下过渡式台阶溢洪道台阶面上的负压区较小,消能率较高且随单宽流量的增加而增加,所提出的台阶布置形式可供相关工程参考。
In view of the fact that the research of the stepped spillway mainly focuses on the aspects of the step size, gradient, fluidity and energy dissipation, but few researches have been done on the layout of the step itself, a new transitional stairway spillway layout is proposed. The turbulent numerical simulation method The hydraulic characteristics of the transitional stepped spillway with different slopes, different single-width flows and different transitional forms were studied. The results show that compared with the continuous contour spillway, under the same conditions, the negative pressure zone on the stepped surface of the transitional spillway is smaller and the energy dissipation rate is higher and increases with the increase of the single-width flow rate. The proposed step arrangement Form for the relevant project reference.