METHOD OF A BOREHOLE CHARGE FORMATION Russian patent published in 2004 - IPC

FIELD: mining industry.

SUBSTANCE: the invention presents a method of a borehole charge formation and may be used in mining industry. Substance of the invention: the method of a borehole charge formation provides for placing in a borehole of a blasting explosive in the form of separate segments spaced by air gaps, install the striking devices and means of initiation, fill in the boreholes tops with an inert material. At that in each segment of a blasting charge they install one or several striking devices initiated so that a detonation of the blasting explosive on all the segments of the borehole charge was made simultaneously. Taking as a base for calculations the altitude of one of the segments with a blasting explosive, the quantity, location points and delay intervals for the strikers, the altitudes of remaining segments with a blasting charge are calculated under the formulas given in the description. The invention ensures an increase of efficiency of the blasting works performance and decrease of costs due to an increased efficiency of explosion and uniformity of distribution of the mountain massif.

EFFECT: the invention ensures an increase of efficiency of the blasting works and decrease of costs.

5 dwg, 3 ex