摘要
针对明渠恒定渐变流的水面变化问题,根据水力学能量方程,建立了明渠恒定渐变流的能量微分方程,并推导出水位及水深的沿程变化规律,通过数学推导,得出明渠恒定渐变流在缓流和急流状态下的水面变化规律。该规律不需对河渠水面线进行分区分情况讨论,适用于各种河渠断面,适用性强,在河渠设计中,也可以通过该规律反算河渠参数,使河渠满足水位和水深的工程要求,实用性强。
This paper was based on the variation of water surface in unsteady flow of open canal. According to the energy equation of hydraulic, it established the energy differential equation of unsteady flow of open canal and derived the variation of water level and depth along the way. Through the mathematical tied;action, it obtained the variation of water surface under the subcritical flow and supereritieal flow in unsteady flow of open ca- nal. This rule does not need the discussion of canals water surface curve by partition and situation. It is suitable for all kinds of canals＇ section and has the strong applicability, in the channel design, this rule can also be used to backed calculate parameters of channel to meet the project require- ments of water level and depth and has the strong practicability.
出处
《人民黄河》
CAS
北大核心
2013年第9期109-110,113,共3页
Yellow River
关键词
明渠恒定渐变流
水位变化
水深变化
河渠设计
unsteady flow of open canal
water level variation
water depth variation
canal design
