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Science and Technology of Energetic Materials

Vol.71, No.2 (2010)

Research paper

The effects of overburden thickness and charge mass-to-structure volume ratio on the blast pressure resulting from the explosion in a subsurface magazine(*in Japanese)
Hiroyoshi Ichino, Tomonori Ohno, Kazuo Hasue, and Shingo Date
p.51-57

Abstract

When an accidental explosion in a surface magazine is happened, the three primary events : air-blast, ground shock and debris, may be produced. To protect surface structures and/or human life from these events, the magazine can be constructed in a subsurface. However, the safety distances and design criteria for a subsurface magazine have not been defined yet. In a series of explosion tests, this study is to examine the effects of overburden and charge mass-to-structure volume ratio on the blast pressure resulting from an accidental explosion in a subsurface magazine. In tests, the airblast pressure propagated along the ground surface was measured by the blast pressure sensors. From the small-scale test, it has been found that the blast pressure from a subsurface magazine increases with the increase of charge mass-to -structure volume ratio. Furthermore, the value of peak pressure has been formulated as a function of the charge massto- structure volume ratio.

Keywords

Subsurface magazine, blast pressure, scaled distance, overburden, charge mass-to-structure volume ratio.

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