摘要
宽尾墩消能技术已先后在多个水利水电工程中得到应用。为了明确其工程应用条件,对现有方法进行了总结,并根据几个已建典型工程初步设计资料的运行工况参数,结合其脉动压强均方根试验测试资料,对这些方法合理性进行了分析,结果表明这些应用条件不够准确;结合流能比k和下游水深比α两个无量纲参数物理意义,对2个参数计算公式进行了调整,得到了典型工程新的无量纲参数曲线分布规律,并确定了一条宽尾墩消能技术工程应用的标准曲线α=6.5k+0.2,若某工程流能比k和下游水深比α两个无量纲参数的分布曲线在标准曲线之上,则宽尾墩消能技术就可应用,否则就不能。
The energy dissipation technology with flaring gate pier has been applied in many water conservancy and hydropower projects.To determine the conditions for its engineering application,this paper summarizes the existing engineering application conditions,evaluating its rationality rely on the preliminary design data of several typical projects,and the root mean square test data of fluctuation pressure.The result shows that these application conditions are not accurate enough.According to the physical meaning of the dimensionless parameters of flow energy ratio k and downstream water depth ratioα,the formula for calculating the two parameters has been changed,and the new dimensionless parameter curve is obtained on distribution law of typical projects under different operating conditions.The standard curve(α=6.5k+0.2)for engineering application of energy dissipation technology with flaring gate pier is determined.If the project distribution curve of the flow energy ratio k and downstream water depth ratioαis above the standard curve,the energy dissipation technology with flaring gate pier can be applied,otherwise,it cannot be applied.
作者
尹进步
YIN Jinbu(College of Water Resources and Architectural Engineering,Northwest Sci-Tech University of Agriculture and Forest,Yangling 712100,China)
出处
《西北水电》
2022年第5期21-27,共7页
Northwest Hydropower
基金
国家自然科学基金(51279170).
关键词
宽尾墩
工程应用
流能比
下游水深比
脉动压强均方根
flaring gate pier
engineering application
flow energy ratio
downstream water depth ratio
root mean square of fluctuation pressure
