关于查表法与公式法计算铸铁管水头损失的探讨

Discussion on the look-up table method and formula of cast iron pipe head loss

以"怀柔应急水源地21号对井供水管线跨怀河工程"为背景,探讨了按水力坡降或比阻以及依据谢才公式计算铸铁管水头损失的方法,并对这两种计算方法的异同优劣进行了阐述,指出在长管工程中采用查表法计算管道水头损失更简单快捷。

Taking the“Huairou emergency water source No. 21 double well water supply pipelines crossing Huai River project”as the back-ground,this paper discussed the method to calculate the cast iron pipe head loss as hydraulic gradient or resistance formula,and elaborated the similarities and differences,advantages and disadvantages of this two calculation methods,pointed out that using look-up table method to calcu-late pipeline head loss was more simple and quick in long pipe engineering.