摘要
针对玻璃钢管沿程水头损失计算问题,根据水力学原理,采用公式对比的方法,论证了海曾-威廉公式的合理性,并修正了相关参数;同时以新疆小洼槽倒虹吸为例,利用不同公式计算水头损失值,然后与实测数据比较分析,发现管径小于2 000mm玻璃钢管的水头损失计算宜采用海曾-威廉公式,沿程摩擦系数采用相应的修正值;管径大于2 000mm宜选用齐恩公式和达西公式的组合。
As for the calculation of friction head loss in the FRP pipe, based on the hydraulics principle, several formulas were compared and the rationality of Hazen-Williams formula was demonstrated, and the relevant parameters were modified. The study adopted different formulas to calculate the water head loss in the case of small-trough inverted siphon in Xinjiang. The results of the comparison between the calculated and observed head loss suggested that.. （1）Hazen-Williams formula can be used in the friction head loss calculation in the FRP pipe with diameter less than 2 000 mm,and the frictional coefficient needs to be modified;and （2）the combination of JiEn formula and Darcy formula can be used in the friction head loss calculation in the FRP pipe with diameter larger than 2 000 mm.
出处
《南水北调与水利科技》
CAS
CSCD
北大核心
2014年第5期196-198,共3页
South-to-North Water Transfers and Water Science & Technology
基金
新疆高等学校科研计划重点项目资助(XJEDU2011I19)
关键词
玻璃钢管
沿程水头损失计算
管径
海曾威廉公式
齐恩公式
FRP pipe
friction head loss calculation
pipe diameter
Hazen-Williams formula
JiEn formula
