起挑流量和终挑流量的拟合分析

Fitting Analysis of Discharge of Staring Ski Jump and Discharge of Ending Ski Jump

贴坎水流在泄水建筑物挑流消能中客观存在,起挑流量和终挑流量的确定直接影响到鼻坎及下游的安全性和防护设计。通过水工模型试验,研究高水头泄水建筑物在一定泄槽底坡条件下,不同反弧半径、挑射角度对起挑流量和终挑流量的影响。并在试验成果的基础上,通过数学回归分析,分别拟合得到起挑流量、终挑流量的计算公式。经实例验证,拟合公式可直接应用于实际工程,可为工程设计提供参考。

It is recognized that adhering nappe exists in ski-jump energy dissipation of water release structure,and the determination of the discharge of staring ski jump and discharge of ending ski jump directly affects the safety and protection design of the bucket lip and downstream.The research studies on the influences of different anti-arcradius and deflecting angle on the discharge of staring ski jump and the discharge of ending ski jump by hydraulic model test.On the basis of the results of the experiment,we get the formula for calculating the flow rate through the mathematical regression analysis.The experiments show that the fitting formula can be applied to practical projects and can be used as references for engineering design.