METHOD OF BLASTING ROCK Russian patent published in 2016 - IPC F42D3/04 

FIELD: mining industry.

SUBSTANCE: invention relates to mining industry, is used to produce minerals blasting using circuits delay-action blasting of charges of explosive substances (ES). Method involves drilling of wells in block, analysis of properties of rocks and determining based on specific consumption q_in of ES charge for each explosive funnel, filling in well with ES charges and short-delay blasting of said charges on adopted arrangement to make different-diameter and depth of explosive funnels. Specific consumption q_in of ES charge for each explosive funnel is determined by the set ratios, and ES charges with lower opening angles of blasting funnel exploded with advance relative to ES charge with large opening angles of blasting funnel in each row of wells.

EFFECT: higher efficiency of blasting, reduced volume of drilling operations and consumption of explosives, providing higher quality of crushing of mine rock.

1 cl, 1 dwg, 1 tbl