冰覆盖下河道水流特性及床面高程的研究

Study on Flow Features and Bed Elevation of River Course With Ice Cover

本文对冰覆盖下的河道水流进行了区域划分,给出了区域分界面上的水流条件。应用水力学中的一些基本概念和基本原理,对冰覆盖下河道水流阻力、水流流速、切力、能坡及床面高程等问题进行了研究,给出了它们的物理概念和计算公式,并用实验观测资料进行了验证,结果令人满意。

The paper divides regionally the flow under the ice cover and gives flow conditions of the regional boundary surface. It studies the matters of flow resistance, flow velocity, shearing force, energy slope and bed elevation of the river course under the ice cover and puts forward their physical concepts and calculation formulas by using the basic concepts and basic principles of hydraulics. It has been examined and proved by tests and observed data and the result is satisfactory.