DISCONTINUOUS EXPLOSIVE CHARGE Russian patent published in 1998 - IPC

FIELD: blast mining of rocks containing highly valuable minerals, for instance, diamonds; besides, it may be used in mechanical engineering as a die for instantaneous production of shaped cavities and holes. SUBSTANCE: the charge uses a plane charge and a detonator. The plane charge is made in the form of separate parts of the same mass located discontinuously between the layers of current-conducting polymer film at a distance determined by formula: , cm, where m - charge mass, kg; Q - specific heat of charge blast, kJ/kg; λ - integral index taking into account the shape of the charge, its density and sensitivity, as well as the properties of the envelope film material at transmission of detonation to the lateral surface of charges - tablets λ=0.92, to end face λ=0.54. EFFECT: enhanced efficiency. 1 dwg, 3 tbl