Calculation of Airblast from Underground Ammunition Storage Magazines
S-CUBED ALBUQUERQUE NM
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The storage of munitions in underground facilities provides a potential hazard to surrounding buildings or populations. Current placement of such facilities relative to above-ground structures is based on long standing curves and scaling relations for the peak airblast overpressure as a function weight of explosives and distance and angle relative to the tunnel opening. The suggested scaling relation for a 50 mbar safety criterion is shown. This relationship is based on a variety of explosive weight-to-volume ratios. However, recent storage designs call for larger amounts of explosives and lower explosives storage densities than were considered in developing the relationship. It has not been demonstrated that the same relation holds for these new conditions. A coordinated program of experiments and calculations is being conducted by the Norwegian Defence Construction Service NDCS to reduce the uncertainties in determination of safe distances and the define the angular distribution of overpressure.
- Safety Engineering
- Structural Engineering and Building Technology