Abstract:Abstract: A blasting vibration test was monitored by laying 5 measurement points at both sides nearby of a damping ditch. The collected signals were investigated with the method of wavelet packet energy spectrum analysis. The energy variation of blasting seismic wave and the energy distribution of each measurement point were obtained. The results of test and analysis showed that the energy of blasting seismic wave is effectively attenuated by the damping ditch, whereas energy magnification exists in a certain distance after the damping ditch; The damping ditch decreases the frequency bands of the signal whose original energy is distributed in high or intermediate frequency bands, and increases the frequency bands of the signal whose original energy is distributed in low frequency bands.