Abstract: In order to reduce the influence of blasting vibration on the surrounding environment, the original blasting technology is improved, that is to say, the 3~5 holes blasting method is instead by the by hole blasting method and the reasonable differential time of the by hole blasting method is researched. The signal hole blasting analysis method is adopted and the mathematical model is established based on the VB6.0 so as to analyze the waveform by increase 1 ms at a time. According to the research results, when the differential time is 23 ms, the minimum blasting vibration velocity is acquired. So it is consistent with the field test results. Therefore,the researches of this paper can provide some theoretical basis for the mine vibration-suppressing blasting works.

Key words: Deep hole blasting, Signal hole analysis method, VB6.0, Differential time