台阶式溢洪道水力特性计算方法分析  

Analysis of Calculation Methods of Hydraulic Characteristics of the Stepped Spillway

作　　者：徐啸[1] 张志昌[1] 

机构地区：[1]西安理工大学水利水电学院,陕西西安710048

出　　处：《西安理工大学学报》2011年第2期239-243,共5页Journal of Xi'an University of Technology

摘　　要：提出单纯台阶式溢洪道的水力设计方法。对比分析了台阶式溢洪道的水流流态、自掺气发生点以及消能效果,推荐Yasuda公式作为滑行水流和跌落水流界限的判别式,提出了自掺气发生点和消能率的统一计算公式,给出了台阶段水面线的计算方法。所得成果可以作为单纯台阶式溢洪道的工程设计参考。This paper suggests a hydraulic design method of simple stepped spillway,compares and analyses the flow patterns,the inception point of aeration and the energy dissipation ratio.Yasuda equations are recommended for determining the limitations of the skimming flow and nappe flow,and the unified computational equations are proposed for the inception point of aeration and energy dissipation ratio.The method of calculating water surface on steps is given.The research results can be used as the engineering design reference for the single stepped spillway.

关 键 词：台阶式溢洪道 水流流态 掺气发生点 消能率 水面线 

分 类 号：TV135.2[水利工程—水力学及河流动力学]