西安市某引水工程长距离重力输水管道设计  

Design of Long-distance Gravity Conveyance Pipeline for a Water Diversion Project in Xi’an

作　　者：王俊 马平安 崔红军 赵海亮 WANG Jun;MA Ping-an;CUI Hong-jun;ZHAO Hai-liang(Xi’an Water Group Planning and Design Research Institute Co.Ltd.,Xi’an 710082,China)

机构地区：[1]西安水务<集团>规划设计研究院有限公司,陕西西安710082

出　　处：《中国给水排水》2021年第22期84-88,共5页China Water & Wastewater

摘　　要：西安市某水厂水源长距离输水工程,管道总长为42.5 km,管径为DN2400。介绍了该输水管道的设计方法,包括管道线路的选择、管径计算、管材选择、水锤分析等。为充分利用水源与水厂的地形高差,通过对管道线路、管径等的比选,实现了长距离重力输水,既保障了管道的输水安全,又节省了工程建设投资和运行成本;结合模型,对末端阀门在不同的关闭时间所模拟的压力包络线进行了分析对比,通过在输水管道沿线设置防水锤空气阀、泄压阀及延长末端阀门关闭时间等水锤防护措施,消除末端关阀水锤和断流弥合水锤,保证了管道的运行安全。In a long-distance water diversion project in Xi’an,the total pipeline length between the water source and the water plant is 42.5 km,and the diameter is DN2400.The design method of the transmission pipeline such as the selection of the pipeline line,pipe diameter calculation,selection of the pipe material and water hammer analysis were introduced.To make full use of the elevation difference between the water source and the water plant,the long-distance gravity water conveyance was realized through the comparison and selection of the pipeline route and pipe diameter.It not only ensured the safety of water diversion,but also saved the construction investment and operating cost.Combined with the model,the pressure envelope simulated by the end valve at different closing time was analyzed and compared.The end valve closing water hammer and cut-off bridging water hammer were eliminated through the water hammer protection measures such as setting water hammer air valves and pressure relief valves along the water pipeline and prolonging the closing time of the end valve,so as to ensure the operational safety of the pipeline.

关 键 词：长距离引水工程 重力输水 水锤分析 

分 类 号：TU991[建筑科学—市政工程]