中文摘要：

提出了三通管道输水时的5种典型工况,通过理论分析方法研究了等径三通输水管不同典型工况下的水击特性,得到了不同工况下的水击波传播规律;然后针对典型的水库-三通管-阀门的输水系统,采用特征线法计算验证,计算结果与理论分析的结果一致。研究表明,当两尾端阀门同时关闭时将产生较大的水头,在实际工程应采取相应的保护措施。

英文摘要：

In this paper, five typical water conditions of pipe tee have been given. A theoretical analysis method is used to study the water hammer characteristics under different working conditions of isodiametric tees. Water hammer wave propagation rules are obtained under different working conditions. Then for typical reservoir- tee-the valve distribution system, characteristic line method is adopted to verify results with theoretical analysis, and the results are consistent. Research shows that it will have a larger head when the two ends of the valve are closed at the same time, so we should take appropriate protective measures in actual proiects.