METHOD FOR FORMING OF CHARGES WITH AIR GAPS Russian patent published in 2008 - IPC F42D1/08 F42D3/04 

Abstract RU 2314488 C1

FIELD: drilling and blasting operations, applicable in various branches using blasting operations in hard rock masses.

SUBSTANCE: the method consists in a preliminary arrangement of a water-proofing casing in dry borehole, forming of a non-water-proof explosive charge in it and tamping of the borehole over the water-proofing casing. Air gaps of foamed polystyrene are formed in the water-proofing casing between the parts of the dispersed explosive charge and between the upper part of the explosive charge and the stemming.

EFFECT: enhanced efficiency of the blast breaking of rocks.

6 dwg

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RU 2 314 488 C1

Authors

Shevkun Evgenij Borisovich

Leshchinskij Aleksandr Valentinovich

Sas Petr Petrovich

Dates

2008-01-10Published

2006-03-16Filed