FIELD: mining art, blasting. SUBSTANCE: the invention consists in the fact that the deep-hole charge has a column of explosive dispersed into parts by inert interlayers, and a stemming the layers for charge dispersion are made in the form of discrete-inlet gaps. The upper part of the gap is made of lump material, and the lower one-of corrugated material. The stemming is also made discrete-inert: the lower part-of corrugated material, the upper one-of lump material. EFFECT: enhanced quality of crushing of the rock mass due to redistribution of explosion energy and gaseous products in the length of the deep-hole charge. 1 dwg
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Authors
Dates
2004-05-27—Published
2001-12-18—Filed