Amplification and attenuation effect of blasting vibration on step topography

The present study investigates the growth and variation of the amplification effect in the propagation of the blasting vibration velocity in step topography. The results indicate that the blast vibration elevation amplification effect on a single step occurs at a certain distance and elevation; the peak particle velocity magnification of the top of the slope doesn't increase monotonously with the increase of the elevation; and the magnification decreases when the elevation exceeds a certain critical value. The elevation exerts an effect of both amplification and attenuation on the blasting vibration velocity. According to the data analysis of the numerical simulation and the field experiment, a model of the blasting vibration velocity prediction on step topography was presented, providing reference for the research of blasting seismic wave propagation law in similar slope projects.