Influence of explosion parameters on energy distribution of blast vibration signals with wavelet packet analysis

Blast vibration analysis is one of the important foundations for studying the control technology of blast vibration damage. According to blast vibration live data that has been collected and the characteristics of short-time non-stationary random signals, the wavelet packet energy spectrum analysis for blast vibration signal has made by wavelet packet analysis technology and the signals were measured under different explosion parameters (the maximal section dose, the distance of blast source to measuring point, the section number of millisecond detonator). Energy distributions for different frequency bands of blast vibration signal are obtained and the characteristics of energy distributions for blast vibration signal which measured under different explosion parameters are analyzed. From blast vibration signal energy, the decreasing law of blast seismic waves which measured under different explosion parameters is studied and the wavelet packet analysis method is an effective means for studying seismic effect induced by blast.