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对长管道系统停泵产生的压力涌浪提出了装设进排气阀的防护措施，建立了进排气阀的特征线方程，并对特征线方程的求解进行了讨论，将这种防护措施用于某供水泵站，从计算结果来看进排气阀较好地抑制了液柱分离的产生，有效地控制了系统中的压力骤增。
This paper puts forward the protective measures of installing inlet and outlet valve on the pressure surge caused by stopping pump in long pipeline system, establishes the characteristic equation of intake and exhaust valve, and discusses the solution of characteristic equation, For a water supply pump station, from the calculation results into the exhaust valve to better inhibit the separation of liquid column, effectively control the pressure surge in the system.