长江科学院院报2013，Vol.30Issue(8)：79-83,5.DOI:10.3969/j.issn.1001-5485.2013.08.018
调水工程输水渠道堰闸流量计算方法探讨
Discussion on the Calculation Formula of Discharge Flow at Weir Sluice in Water Transfer Project
侯冬梅 1王才欢 1刘毅1
作者信息
- 1. 长江科学院水力学研究所,武汉430010
- 折叠
摘要
Abstract
The calculation accuracy of flow at the weir sluice of water diversion project is a prerequisite for its digital operation.Traditional method of calculating discharge flow in hydraulics textbooks in general is to discriminate the flow pattern first,and then to calculate the discharge flow according to corresponding empirical formulas.The discrimination of flow pattern is determined by the relative opening e/H of gate.In the present research,by experimental and theoretical analysis,it is concluded that e/H =0.65 in the traditional formula as an index of discriminating orifice flow and weir flow is suitable only for free flow condition.It would cause big error in the calculation for long-distance water transfer projects,because it is not suitable for big submerged weir flow converting to submerged orifice flow.According to model test data,the fitted formula of calculating the discharge at weir sluice under specific conditions of water transfer project are presented.关键词
流态识别/孔流堰流转换条件/淹没系数/调水工程Key words
flow pattern discrimination/ condition of the conversion between orifice flow and weir flow/ discharge coefficient for submerged flow/ water diversion project分类
建筑与水利引用本文复制引用
侯冬梅,王才欢,刘毅..调水工程输水渠道堰闸流量计算方法探讨[J].长江科学院院报,2013,30(8):79-83,5.
