METHOD FOR BED PREPARATION WITH STABLE ROCK IN IMMEDIATE BACK

摘要

FIELD: mining.;SUBSTANCE: method for bed preparation with stable rock in immediate back includes driving of production and ventilation drifts. Transportation of ore is carried out by a conveyer located in extraction drift. The extraction of minerals is performed by chamber system with extraction of block in retreat order. In the middle of the section the production and ventilation drifts are parallel to each other. At that they are periodically connected to each other by brake throughs in which the ventilation bulkheads are installed. The ventilation drift extends from production drift at a distance to exclude their mutual influence. The preparation scheme is applicable for two-bed mining.;EFFECT: invention makes it possible to reduce time for preparation of block for mining, increase development rate.;2 cl, 2 dwg