输水管道水力学计算参数的选取  

Selection of Hydraulic Calculation Parameters for Water Transmission Pipeline

作　　者：吴亮[1] WU Liang(Xinjiang Institute of Water&Hydropower Engineering Investigation,Design and Research,Urumqi 830000,China)

机构地区：[1]新疆水利水电勘测设计研究院有限责任公司,新疆乌鲁木齐830000

出　　处：《云南水力发电》2022年第11期99-102,共4页Yunnan Water Power

摘　　要：长距离输水工程水头损失的计算尤为重要,对于不同的管材选择一样的计算公式,或者对于不同的管材选择一样的计算参数都会影响计算结果,严重的可以导致管道引不到设计流量,从而影响工程的效益。目前国内管道输送中常用的3种管材有:PCCP管、球墨铸铁管、螺旋焊接管,针对3种管材在不同的水力学计算公式中所采用的参数进行研究统计,为今后的其他类似工程设计提供有利的设计依据。The calculation of head loss in long-distance water conveyance project is particularly important.Choosing the same calculation formula or parameters for different pipes will affect the calculation results.Severe problems may result in the failure of designed flow,which will affect the benefit of project.At present,three pipes commonly used in domestic pipeline transportation are:PCCP pipe,ductile iron pipe and spiral welded pipe.In this paper,the parameters of three pipes used in different hydraulic calculation formulas are studied and counted,which provides favorable design basis for other similar engineering designs in the future.

关 键 词：达西公式 谢才公式 哈森-威廉斯公式 当量粗糙度Δ 糙率n值 摩阻系数Ch值 

分 类 号：TV134[水利工程—水力学及河流动力学]