泄水建筑物斜坡上扩散段水跃共轭水深近似计算

Approximate Calculation of Hydraulic Jump Conjugate Depth At Expansion Section on the Slope of Outlet Structure

依据水力学水跃理论，对斜坡上扩散段水跃共轭水深近似计算，据力学动量原理，以跃首与跃尾剖面列出动量方程式求解，并在方程式中以跃首水深拟为收缩水深，直接用算式求得，可简化计算，并举出算例，效果良好。

In light of the theory of hydraulic jump, the approximate calculation is made for the conjugate depth at the expansion section on the slope. In light of the principle of kinetic momentum, the momentum equation is listed by the sections of jump head and jump tail to find the solution, and the water depth at the jump head in the equation is proposed as the contracted depth which can be solved directly by the equation. The calculation can be simplified and the calculation examples can be given, so the effect is good.