长距离重力流压力输水工程水锤防护设计探讨

摘要

随着城市用水规模不断扩大,长距离输水工程日益增多,水锤引起的爆管严重影响了长距离压力输水工程安全。为解决李家河水库输水工程因管线长、地面起伏大而发生水锤破坏可能性的问题,进行管道分段、阀门选择、运行控制等多种措施综合设计,并采用特征线法进行数值模拟计算,有效保障压力输水工程安全。提出长距离重力流压力输水管道水锤防护需从工程手段、技术措施、运行管理等多方面分析,综合制定水锤防护方案,消除水锤对工程安全的影响。%With the expanding of urban water consumption,the long distance water conveyance project is increasing day by day,and the project safety is seriously threatened by water hammer.In order to solve the water hammer damage in Lijiahe Reservoir＇s water conveyance project because of its long distance pipeline and fluctuating ground,such the measures as pipeline segmentation,valve selection,operation control and so on are adopted for the integrated design of water hammer prevention,and the characteristics method is used for the numerical simulation and calculation,effectively protecting the project safety.Through the systematic analyses for project methods,technical measures and operation guidance,the prevention design for the water hammer damage is made so as to eliminate the water hammer influence on project security.