水锤波速对长距离加压输水工程停泵断流弥合水锤计算的影响研究  

Study on Influences of Water Hammer Wave Velocity on Calculation of Pump-off Water Hammer in Long-distance Pressurized Water Transfer Pipeline Project

作　　者：董茹 王小东[2] 闫朝 DONG Ru;WANG Xiao-dong;YAN Zhao(School of Architecture and Engineering, Yulin University, Yulin 719000, China;Organization Department, Yulin University, Yulin 719000, China;Yulin Water Conservancy Engineering Construction Center, Yulin 719000, China)

机构地区：[1]榆林学院建筑工程学院,陕西榆林719000 [2]榆林学院组织部,陕西榆林719000 [3]榆林市水利工程建设中心,陕西榆林719000

出　　处：《榆林学院学报》2021年第4期16-20,共5页Journal of Yulin University

基　　金：陕西省教育厅专项(19JK0999);榆林市科技局产学研项目(CXY-2020-005-08)。

摘　　要：修建长距离跨流域压力输水工程是解决水资源供需矛盾的重要途径之一,且其供水安全性尤为重要。水锤波速是影响水击压力变化和发生爆管事故的重要因素。结合某长距离、低扬程、多起伏、大管径输水工程实例,研究玻璃钢管、钢砼管、铸铁管等不同管材水锤波速的理论计算,及不同波速对管道水锤压力变化的影响,发现管材采用铸铁管时,管道中水锤升压的最大压力均大于采用玻璃钢管和钢砼管时的最大压力。得出管材波速越大,水锤升压越高的结论,因此在管材选用时,在管材承压等满足要求的前提下,建议优先选择波速小的管材。The construction of long-distance cross-basin pressure water conveyance project is one of the important ways to solve water supply and demand contradiction.Its water supply security is particularly important.Wave velocity is an important factor affecting water hammer.This paper presents an example of a long distance pressurized water conveyance project with different pipe materials such as cast iron pipe,the glass steel pipe and reinforced concrete pipe,researching the influence of different wave velocities on the water hammer pressure changes.When using iron pipe,pipeline water hammer pressure in the biggest stress is greater than those using glass pipe and reinforced concrete pipe.It is concluded that the greater the wave velocity of the pipe is,the higher the pressure boost of the water hammer is.Therefore,when selecting the pipe,it is suggested to choose the pipe with smaller wave velocity on the premise that the pressure of the pipe meets the requirements.The conclusions can provide valuable reference for the safety design of long distance pressure water delivery engineering.

关 键 词：长距离输水 断流弥合水锤 水锤波速 水锤防护 

分 类 号：TU991.39[建筑科学—市政工程]