Method for increasing output power of jet flow hydraulic oscillator

The invention provides a method for increasing the output power of a jet flow hydraulic oscillator. A vortex cavity is connected with a piston body, the piston body is connected with a piston sleeve in a sliding mode, and a disc spring is arranged between the piston body and the piston sleeve; an axial relative movement mechanism is arranged in a pressure medium flow channel from the vortex cavityto the piston sleeve, and the axial relative movement mechanism changes the through-flow section of a pressure medium through axial relative movement generated by vortex cavity excitation; and the output power generated by excitation is increased through the steps. By the adoption of the scheme that the vortex cavity is matched with the axial relative movement mechanism, the vibration amplitude of the vortex cavity can be increased, the vibration frequency is reduced, then the output power of the jet flow hydraulic oscillator is increased, and the vibration form meeting the requirement of underground construction is