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METHOD FOR OBTAINING THE PRESET DEGREE OF CRUSHING OF CRUMBLING ROCK MASS AT GROUP BLASTING OF DEEP-HOLE EXPLOSIVE CHARGES
METHOD FOR OBTAINING THE PRESET DEGREE OF CRUSHING OF CRUMBLING ROCK MASS AT GROUP BLASTING OF DEEP-HOLE EXPLOSIVE CHARGES
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机译：深孔炸药群爆破中获得压碎岩体预设度的方法
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摘要
FIELD: mining industry, underground and open geotechnology, blasting of crumbling rocks for obtaining the preset degree of crushing.;SUBSTANCE: holes in the crumbling rock mass are drilled, charged and slow-down blasted. The distance between the holes in a group and between the groups of holes is determined depending on their diameter, detonation characteristics of the explosive, physico-technical properties of the rock mass, parameters of its jointing, dimension of the conditional lump, value of the rock pressure and the friction coefficient. The holes in a group are located at a definite distance and the required distances between the hole group provide for obtaining the preset degree of crushing of crumbling rock masses.;EFFECT: enhanced efficiency of capacity of mining.;1 tbl, 2 ex
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机译：领域：采矿业，地下和开放的地球技术，对破裂的岩石进行爆破以获得预定的破碎度。物质：对破裂的岩体中的孔进行钻孔，装料和减慢爆破。一组孔之间和一组孔之间的距离取决于孔的直径，炸药的爆炸特性，岩体的物理技术特性，节理参数，条件块的尺寸，孔的值。岩石压力和摩擦系数。一组中的孔位于确定的距离处，并且各组孔之间的所需距离可确保获得预先设定的破碎岩体破碎度。效果：提高了开采能力。1tbl，2 ex
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