Abstract: In this paper the design of the controlled water hammer gate valve is put forward in view of the phenomenon that the water hammer is caused by the unreasonable strategy of the valve in the process of mine water discharge. The gate valve speed control based on the closed loop control theory realizes the application of various control strategies, so as to prevent water hammer. Through numerical simulation, experimental simulation and field verification method, it is verified that the controllable water hammer gate valve can achieve various shutoff displacement curves, and has good stability and reliability. It provides technical support for waterproof hammer equipment.