METHOD OF BLASTING OF ROCK MASS Russian patent published in 2013 - IPC F42D3/04 E21C41/26 

FIELD: mining.

SUBSTANCE: method of blasting of rock mass includes preliminary zoning of rocks by fracturing, mosaic structure and blastability thus determining elementary uniform sections and subsequent updating of zoning during mine works. Elementary uniform zones are formed by size and output of slurry in near-wellbore corresponding by height to three zones - location of stemming, location of charge above and below bench bottom. According to characteristics of elementary zones parameters of drilling and blasting operations are determined, at that characteristics of slurry of elementary zones of charge level are used to determine parameters of drilling and blasting operations, and characteristics of slurry of elementary zones of stemming level are used to update parameters of drilling and blasting operations.

EFFECT: improving efficiency of drilling and blasting operations due to reduction of expenses of drilling and blasting and due to reduction of losses of wells caused by rockfall, improving quality of rocks fragmenting and development of bench bottom.

6 dwg