广东水利水电Issue(6)：1-5,5.
梯形断面溢流堰泄流能力计算分析
Calculation and Analysis of the Discharge Capacity of the Trapezoidal Section Overflow Weir
黄智敏 1黄靖 1叶利娜 1陆汉柱 1朱文音1
作者信息
- 1. 广东省水利水电科学研究院,广州 510635||广东省水动力学应用研究重点实验室,广州 510635
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摘要
Abstract
At present,the discharge capacity calculation method of trapezoidal section(or open channel)overflow weir of the spillway is not perfect and mature.Based on the hydraulic model test of the trapezoidal section overflow weir with different slope coefficient m,the calculation method of the discharge capacity of the trapezoidal section overflow weir is put forward.The discharge of the trapezoidal section overflow weir is divided into two parts:the discharge of the middle rectangular section area and the discharge of the slope area on both sides in this method.The discharge calculation method of the each area is as follows:the discharge of the middle rectangular section is calculated according to the conventional discharge formula of the overflow weir;in the discharge calculation of the slope area on both sides,the factors that the slope area velocity and discharge coefficient decrease compared with the corresponding values of the middle rectangular area are considered,and the relationship between the discharge coefficient correction factor β of the slope area and slope coefficient m is put forward,the modified discharge coefficient can be applied to the discharge calculation of the slope area on both sides.The research results are verified by the hydraulic model test results of the related engineering,which have the characteristics of convenient calculation and high precision,and can be used as a reference for similar engineering design and operation.关键词
梯形断面/溢流堰/泄流能力/流量系数/试验研究Key words
trapezoidal section/overflow weir/discharge capacity/discharge coefficient/test study分类
水利科学引用本文复制引用
黄智敏,黄靖,叶利娜,陆汉柱,朱文音..梯形断面溢流堰泄流能力计算分析[J].广东水利水电,2025,(6):1-5,5.
