METHOD OF EXPLOSION OF COMBINATION CHARGE Russian patent published in 1995 - IPC

FIELD: mining industry. SUBSTANCE: method of explosion of combination charge consists in drilling of well 1, filling of it with explosives of different types, tamping with inert material 2 and initiation. Placed in the lower part of well 1 is high- blasting explosive 3 with a high velocity of detonation, having a high-negative oxygen balance, then ammonium nitrate 4, and a high-blasting explosive similar to explosive 3 is placed above it in the lower part of well 1, and again ammonium nitrate 4 is placed above it, whose mass and length is twice lesser than the total mass and length of the main (6) and additional (7) charges of explosive; the mass and length of ammonium nitrate 4 positioned between the main (6) and additional (7) charges of explosive equal the total mass and length of the main (6) and additional (7) explosive charges; the total mass and length of ammonium nitrate 4 in well 1 with respect to the total mass and length of industrial explosive in the main (6) and additional (7) explosive charges makes up 2/3; in this case linear initiators of increased weight of filler 8 are used as initiators of the main (6) and additional (7) explosive charges; trinitrotoluene blocks 9 are connected to the bottom part of the initiators, being positioned in the center of the main (6) and additional (7) explosive charges; the main (6) and additional (7) explosive charges are exploded simultaneously. EFFECT: facilitated procedure. 2 cl, 1 dwg