Abstract：An introduction of the Dazhanchang pumping station and an investigation of the broken pressure pipes caused by pumping accident in the pumping station are presented.According to the theory of the water hammer and its characteristic,the calculating model of the pumping accident is built.The change of the water pump parameter and the piping pressures in pumping accident transition process are simulated,and the highest and lowest head envelope curves are obtained.By analysing the result combined with the local investigation,the main reason is deduced.Pumping accidents result in excessively high water hammer pressure.The negative pressure occurs along pipes.The quantity of the pipes can not meet the design requirement and so on.The measures to deal with the problem are given as following: changing the destructive pipes and installing the air inlet-outlet valve on 3~# and 6~# anchor blocks can avoid the excessively high negative pressure.the water hammer;pumping accident;pressure pipe;head envelope curve
姚青云；李志敏. 事故停泵水锤对压力管道的影响[J]. 排灌机械工程学报, 2006, 24(6): 45-47.
YAO Qing-yun, LI Zhi-min. Effect of water hammer to pressure pipes for pumping accidents. Journal of Drainage and Irrigation Machinery Engin, 2006, 24(6): 45-47.
