METHOD FOR EXPLOSIVE DESTRUCTIONS OF ORE MASSIVES HAVING FRACTURED MESH STRUCTURE Russian patent published in 2004 - IPC

FIELD: mining industry.

SUBSTANCE: during driving of cut drilling mines and during drilling of vertical wells geological documentation is formed on basis of which fractured mesh structure of ore massive is built, compensating chambers are formed inside separate structural block and shortly delayed wells or wells clusters detonation is performed in ore massive on compensating chambers and compressed environment with consideration of mineralized fractures location, while charge of explosive substance in wells is calculated dependently on position of well in massive, number of bare surfaces and volumes of outbreak funnel on basis of mathematical dependence considering height of extracted bed, specific loss of explosive substance on extraction dependent on physical-mechanical properties and fractures density in rock, theoretical and additional extraction areas for charge or group of charges of delay step limited by artificial and natural bare surfaces, while wells placed in central portion of block between compressed environment and compensating chambers are last to be exploded.

EFFECT: even and quality splitting up of rock massive.

2 dwg