Patent ID: 9027453
Filing Date: 2015-05-12
Classification: F42B,F42D

Abstract:
1. A blast treatment method for blast-treating a treatment subject comprising a treating explosive formed to extend along a specific direction, a shell, which has a central axis extending along a predetermined direction and houses therein the treating explosive in an orientation where the treating explosive extends along the central axis of the shell, and a chemical agent filled so as to surround the treating explosive inside the shell, the treatment subject, which is housed inside an outer container extending along a predetermined axial direction in an orientation where a central axis of the outer container and the central axis of the shell extend substantially parallel while being displaced from each other in a direction substantially orthogonal to the central axes themselves, the blast treatment method comprising: a blasting explosive placement step of placing a plurality of blasting explosives used for blasting the treatment subject at positions on an exterior surface of the outer container in such a manner that the blasting explosives are spaced apart from each other in a direction surrounding the central axis of the outer container and arranged to respectively extend substantially parallel to the central axis of the outer container; an installation step of installing, within a sealable chamber, the outer container in which the treatment subject is housed; and a blast step of detonating the plurality of blasting explosives, and causing the treatment subject to be blast-treated by detonation energy of the blasting explosives in the sealed chamber, wherein in the blast step, each of the blasting explosives is separately detonated at a detonation timing at which fragments of the outer container or shock waves created in a vicinity of each blasting explosive by the detonation energy of the blasting explosive collide against the shell with a temporal difference smaller than that caused when the plurality of blasting explosives are simultaneously detonated.