聚氨酯内衬球墨铸铁管摩阻系数的测试  

Testing of Specific Friction Coefficient of Ductile Iron Pipe with Polyurethane Lining

作　　者：孙华林[1] 侯武民 杨万良 董红军 李宁 

机构地区：[1]天津市华淼给排水研究设计院有限公司,天津300190 [2]新兴铸管股份有限公司,河北邯郸056300

出　　处：《中国给水排水》2012年第18期76-79,共4页China Water & Wastewater

摘　　要：对聚氨酯内衬球墨铸铁管不同流速下的流量、压强差进行检测,并依据公式分别计算出此种管道的当量粗糙度k、海曾-威廉系数Ch、曼宁糙率系数n值,这些值可以为工程设计提供可靠依据和参考。The flow rate and pressure difference of ductile iron pipe with polyurethane lining were measured under different velocities. Equivalent roughness k, Hazen-Williams factor Ch and Manning＇ s roughness coefficient n of the ductile iron pipe were calculated respectively according to the formula. The objective is to provide reference for the engineering design.

关 键 词：球墨铸铁管 聚氨酯内衬 摩阻系数 

分 类 号：TU991.36[建筑科学—市政工程]