The blast wave resulting from an accidental explosion of energetic materials could cause serious damage to structures as well as loss of human lives. Thus, a higher degree of safety on the storage facilities of energetic materials is strongly required. Energetic materials are usually stored in the storage facilities such as an underground magazine (UGM) or an earth covered magazine (ECM). In the present study, field explosion experiments with these types of scale-model magazines had been carried out. The UGM scale-model was designed to be not destroyed (rigid) by the detonation of high explosives. The ECM scale-model was destroyed (non-rigid) by the detonation of explosives. The results showed that the blast wave pressure in case of rigid model had some directivity. However, the blast wave pressures in case of non-rigid model were a little connected with the azimuth angle. In addition, the effect of an exit's barricade of a magazine model on blast wave propagation also investigated. These experimental results are worthwhile to take into consideration to design a higher degree of safety on the storage facilities.
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