[关键词]
[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2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2 000 mm 玻璃钢管的水头损失计算宜采用海曾2威廉公式, 沿程摩擦系数采用相应的修正值; 管径大 于2 000 mm 宜选用齐恩公式和达西公式的组合。
[Key word]
[Abstract]
As fo r the calculat ion of fr ictio n head lo ss in the FRP pipe, based on the hydraulics principle, severa l fo rmulas wer e compar ed and the rationalit y of H azen2Williams formula w as demonstrated, and the r elevant parameters w ere modified. T he study adopted differ ent formulas t o calculate the water head loss in the case o f small2tr ough inverted siphon in Xinjiang. The re2 sults o f the com par ison betw een the calculated and observ ed head loss sug gested that: ( 1) H azen2Williams formula can be used in the fr ictio n head loss calculatio n in the FRP pipe w ith diameter less than 2 000 mm, and the fr ictio nal coefficient needs to be modified; and ( 2) the combinat ion of JiEn fo rmula and Darcy fo rmula can be used in the friction head loss calculat ion in the FRP pipe w ith diameter larg er than 2 000 mm.
[中图分类号]
[基金项目]
新疆高等学校科研计划重点项目资助( XJEDU 2011I19)