The safety separation distance of explosive magazines has been one of the most important concerns in the storage of explosives. How to decrease the safety separation distance is an attractive and challengeable issue in engineering practice. In this study, based on the existing magazine types and characteristics of blast wave propagation in air, a novel shallow buried explosive magazine is proposed to reduce the safety separation distance. The novel magazine consists of a shallow buried main body, a distribution slab and a heap-up earth cover. Using the finite element software LS-DYNA, numerical studies are conducted to verify the feasibility of the proposed magazine. A detailed numerical model of internal explosion in the magazine is developed and validated with the testing data. The mechanism of magazine components and characteristics of blast wave propagation during internal explosions are revealed and discussed. In addition, parametric studies are carried out to explore the effects of distribution slab, main body strength and transport passage type. The results show that the proposed magazine can greatly decrease the safety separation distance in the protected direction compared with the earth-covered magazines. As the key component of the novel magazine, the distribution slab can reduce the safety separation distance in the protected direction at least 48%. The effect of main body strength is limited and the straight transport passage can reduce the propagation of blast waves in 90° and 180° directions effectively.
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