Abstract: The propagation law of stress waves generated by cylindrical charge blasting in rock is an important basis for blasting theoretical analysis and charge structure design.But at present,the propagation law of stress wave produced by cylindrical charge blasting is limited to simple superposition.Based on the timespace attenuation law of stress wave produced by spherical charge blasting,the attenuation law of stress wave in rock is verified by combining with numerical simulation,and a reasonable attenuation law of stress wave produced by cylindrical charge blasting is obtained.It is pointed out that the stress produced by cylindrical blasting increases in the propagation direction of wave explosive,and the action time of stress wave produced by cylindrical blasting increases compared with that of spherical blasting.

Key words: Spacetime attenuation,Cylindrical charge blasting,Stress wave,Attenuation Law