Significant factors affecting airblast overpressure from blasting are charge mass, distance from blast, face height and orientation, topographic shielding, stemming height and type, blasthole diameter and burden, burden and spacing, sequential initiation timing, and meteorological conditions.
This paper describes modelling techniques that have been developed to evaluate the effects of these factors, and methodologies that have been used for the predictive assessment of airblast overpressure.
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