针对唐口煤矿千米立井排水系统,对无阀管路、止回阀作用和缓闭阀作用三种工况的停泵水锤进行数值模拟。表明千米立井排水系统在无阀管路和止回阀作用时,突然停泵不会引起断流弥合水锤;但千米立井停泵时引起的连续水锤压力很大,二阶段缓闭阀能有效地降低水锤压力。 Aiming at the drainage system of 1000m shaft in Tangkou coal mine, the numerical simulation of the pump stop water hammer in three conditions of valveless pipeline, check valve and slow closing valve is carried out. This indicates that when a shaftless drainage system works under the action of a valveless pipeline and a check valve, the sudden stop of the pump will not cause a stoppage to bridge the water hammer; however, the continuous water hammer pressure caused by stopping the pump in the 1000m shaft is very large. Valve can effectively reduce the water hammer pressure.