FIELD: mining.
SUBSTANCE: blasting of upper packed projection is performed by using the fan switching scheme of borehole charges so that filled-up prism is formed at the bottom of nonworking flank on catching platform and descends to location place of earlier formed transport access tracks, as well as by forming on the prism body of system of temporary transport access tracks and working platforms for simultaneous development of horizons of temporarily nonworking flank.
EFFECT: operational creation of system of temporary access tracks and reduction of costs for formation of route, as well as high runaway speed of temporarily nonworking flank owing to involving several projections into simultaneous development.
2 cl, 5 dwg
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