Analysis of Energy Distribution for Digital Electronic Detonator Blasting

Abstract

Excavation blasting has a great impact on the buildings, therefore, it is important to control blasting vibrations. In this paper, based on the time-energy density analysis and wavelet packet analysis for measured data of blasting vibrations, some useful results can be concluded. Firstly, the energy of Millisecond Detonator Blasting (MDB) vibration signals in the 0~200Hz band accounts for 90.06% of the total energy, and its advantage energy mainly distribute in low-frequency band. However, the energy of Digital Electronic Detonator Blasting (DEDB) vibration signals in the 0~600Hz band is 96.08% of the total energy, its advantage energy mainly distribute in wider band. Moreover, the time-energy density curve of DEDB doesnt have the abrupt and separated fluctuation, which indicates the interference and superposition of DEDB are very distinct. The controlled DEDBs and tunnel support measures of this project have achieved a good effect. The comprehensive benefits are remarkable and it has an important significance for improving the level of blasting technology.