METHOD FOR BLASTING CRUSHING OF ROCKS (MODIFICATIONS) Russian patent published in 2003 - IPC

Abstract RU 2208220 C2

FIELD: mining art, applicable at destruction of rocks. SUBSTANCE: the main difference from the known methods for blasting crushing of rocks is the placement of the explosive charge with at least one spacing relative to the hole wall in its length, the charge volume makes up 0.3 to 0.95 of the volume of the hole active section; the cross-section area of the explosive charge is selected proceeding from condition S₃=(1,13-2,84)r2hole

, [sq.m]; the cross-section radius of the explosive charge is selected proceeding from condition R₃=(0,55-0,95)r_hole, [m]. EFFECT: enhanced efficiency of the destructive action of the explosive charge due to the increase of the utilization factor of the explosive charge energy for crushing of rocks. 11 cl, 10 dwg

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RU 2 208 220 C2

Authors

Prokopenko Viktor Stepanovich

Dates

2003-07-10—Published

2000-11-27—Filed