A subsurface magazine has a chamber underground with a passage vertical to the ground surface. A pentaerythritol tetranitrate (PETN) pellet of 1.00 g was detonated in a subsurface magazine model to evaluate the blast peak overpressure and the positive impulse around the subsurface magazine. The presence of water or sand in the chamber mitigates the blast peak overpressure and positive impulse remarkably. Precise data obtained from the experiments are presented herein.
subsurface magazine, blast wave, mitigation, water, sand