METHOD OF THE BLASTHOLE CHARGE DISPERSION AND STEMMING Russian patent published in 2007 - IPC F42D1/08 F42D1/24 

FIELD: mining; other industries; methods of the blasthole charges dispersion and stemming used in the drilling-and-blasting operations.

SUBSTANCE: the invention is pertaining to the field of mining and may be used in the blasthole drilling-and-blasting operations for dispersion of the charge of explosives and for the shotholes and blastholes stemming. The method of the borehole charge dispersion and stemming provides for filling of the borehole with blasting the explosive, installation of the striker, dispersion of the charge and the stemming. Dispersion of the explosive charge is exercised by the quick-hardening foam-gel, and the borehole stemming is exercised with the help of the non-solidifying foam-gel. The invention allows to improve the quality of crushing of the rock massif and to reduce the net cost of the blasting operations due to dispersion of the charge by the cheap low-density material, to improve the closing properties of the stemming, to reduce the concentration of the harmful substances in the dust-gaseous cloud and to diminish the area of its dispersing.

EFFECT: the invention ensures the improved quality of the crushing of the rock massif, reduction of the net cost of the blasting operations, improvement of the stemming closing properties, reduction of the harmful substances concentration in the dust-gaseous cloud, diminishing of the area of its dispersion.

2 dwg