【作者】 杨敏； 李强； 邓辉；

【Author】 Yang Min~1 LI Qiang~2 Deng Hui~1 (1.School of Civil Engineering,Tianjin University,Tianjin 300072,China; 2.Hainan Water Conservancy,Hydropower and Architecture Investigation and Design institution,Haikou 570203,China)

【机构】 天津大学建工学院； 海南省水利电力建筑勘测设计院；

【摘要】 本文在圣维南方程基础上,采用假想窄缝法和虚拟流量法,并运用稳定性高的 Priess- mann 隐格式建立长距离串联输水管线的连续充水数学模型。该模型改进传统的全程模拟方法,由程序预设参数判断水流是否处于恒定流状态,选择计算处于非恒定流状态的管道,可有效地节省计算时间。将该模型应用于南水北调天津千线有压系统充水,分析不同充水流量下产生的水击大小和对有压输水系统运行影响,结合充水天数得出安全的充水流量。更多还原

【Abstract】 Base on the Saint-Venant equation and priessmann difference,a mathematical model which a- dopted virtue discharge method and slot method for simulating continuous water-filling in Long-distance water transfer system is build.It ameliorates traditional whole-length modeling method and effectively reduce the calculational time by only computing the unsteady flow state,which judge by set parameter in program.Applying the water-filling model to Tianjin Main Line of South-to-north water transfer project,the result reaches a safe charge and shows that it has important influence on the first-time run- ning of the pressurized system.更多还原