METHOD OF PERFORMING DRILLING AND BURSTING OPERATIONS AND CHARGE FOR REALIZATION OF THIS METHOD (VERSIONS) Russian patent published in 2005 - IPC

FIELD: bursting operations and charges used for such operations.

SUBSTANCE: proposed method is widely used in bursting technologies, mining art for breaking rock, oversizes, underground working by drilling and bursting operations. Charge is formed at point where drilling and bursting operations are to be performed; charge is formed by mixing two explosion-proof components; prior to filling the envelope of charge, temperature of each component is brought to magnitude within the following range t_b.p.>t_1,2>t_cr, where t_1,2 is temperature of each component; t_b.p. is boiling point of component of lesser boiling point and t_cr is crystallization temperature of component which is higher than that of other component; envelope is first filled with component of lesser density. Charge is proposed in two versions: in form of elastic envelope used mainly for descent blast-holes (wells) and in form of rigid polymer tin with changeable covers: transportation cover and working cover.

EFFECT: enhanced safety and efficiency of performing drilling and bursting operations.

4 cl, 5 dwg