FIELD: mining. SUBSTANCE: method for device driving working in rocks containing outburst-prone bed includes classification of rocks into beds by category of outburst hazard; drilling a row of blastholes parallel to bedding in working face over its entire width; charging and bed successive blasting of explosive charge with simultaneous blasting in each row. Novelty consists in that the first to be blasted are blastholes in out outburst-prone bed. Then, successively blasted are blastholes in rows beginning from one nearest to outburst-prone bed with advance towards the most remote one. EFFECT: higher efficiency. 1 dwg
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Authors
Dates
1995-11-27—Published
1992-09-21—Filed