高拱坝挑流水舌左右碰撞作用下河床基岩冲刷平衡深度的数学模型

Mathematic Model for Bedrock Scoured Balance Depth of River Bed under the Action of Left-Right Collision of Water Jet from High Arch Dam

应用紊动射流理论和水流动量方程,建立了高拱坝挑流水舌左右碰撞作用下,考虑水舌空中扩散三维性、漏碰流量以及碰撞能量损失的河床基岩冲刷平衡深度的数学模型。试验验证模型是合理可行的,对高拱坝挑流水舌碰撞作用下的水垫塘设计和应用具有参考意义。

The turbulent jet theory and water flow momentum equation are used to establish the mathematic model for calculating bedrock scoured balance depth of river bed under the action of left-right collision of water jet from high arch dam in considering 3-D diffusion,leakage collision flow and collision energy losses of water jet dispersion in the air.This model is tested to be rational and feasible via the experiments,being of reference significance for water cushion pool design and application under the action of water jet collision from high arch dam.