溢水坝垂直跌坎水力计算简化

Simple hydraulic calculation of Overflow dams vertical drop

本文以表面水跃第一临界状态基本公式为基础，在伯诺里方程式中拟设比β=a/E0最值，应用泰勒公式特殊条件牛顿二项定理，解得跌坎水深算式，并从工程实践资料拟定β=0.2，将所得跌坎水深代入第一临界状态基本算式，即求得跌坎高度，举出算例，效果良好。

On the basis of fundamental equation of the first critical state of the surface hydraulic jump, proposing the ratio of β = a/E0 in the Bernau formula and using the special conditions, Newton two theorems of Taylor formula, the water depth of drop was calculated, then preparing β= 0.2 from the practical engineering practice, and dropping the hydraulic depth of drop into the basic formula of the first critical state, the height of drop was deduced and there are some examples listed in the article to prove the validity of the method.