南水北调与水利科技Issue(1)：131-135,5.DOI:10.13476/j.cnki.nsbdqk.2016.01.022
长距离高落差重力流供水工程的关阀水锤
Water-hammer in the long-distance and high-drop water-supply project of gravity flow
摘要
Abstract
Water hammer of first phase usually occurs in the long-dist ance and high-head water-supply system. Thus, once the dow nstream valve is urgent ly closed in case of an accident in a project, a rational closure rule is needed to ensure the safety of the water-supply system. Based on the long-distance and high-fall gravity flow water-supply project, the formula of water hammer at the end of first phase and the formula for linear valve closure were proposed based on the method of characteristic (MOC) when valve closure law or water hammer pressure were known. The two formulas had been tested by numerical calcula-tion. It was observed that the results of both formulas fit the results of numerical calculation very well. Taken together, we be-lieve that the conclusion of this paper could provide a reference for pipeline design, operation and dispatching of long-distance and high-drop gravity flow water-supply project .关键词
重力流/高落差输水/流阻系数/首相水锤/关阀规律/特征线法Key words
gravity flow/high-fall water conveyance system/coefficient of flow resistance/first phase water hammer/valve clo-sure law/MOC分类
建筑与水利引用本文复制引用
罗浩,张健,蒋梦露,俞晓东,黎东洲..长距离高落差重力流供水工程的关阀水锤[J].南水北调与水利科技,2016,(1):131-135,5.基金项目
国家自然科学基金(51379064)Fund：National Natural Science Foundation of China(51379064) （51379064）
