Aiming at the technical problem that the dynamic load and overload performance test of three telescopic columns of hydraulic supports cannot be carried out at home and abroad,based on the requirements of GB 2597.2—2010 and 20 000 kN energy storage impact type quick release device,using theoretical analysis and testing,a dynamic overload test method was present to realize the dynamic overload performance test of the column.Combining with simulation analysis,the pressure characteristic curves of the column cylinder were obtained.The test data and simulation results provide reference for the design and manufacture of the three telescopic columns and the improvement of their impact resistance.