METHOD OF CARRYING OUT COUNTER-HEADING DRIVAGE AT THEIR BREAKTHROUGH

摘要

FIELD: mining.;SUBSTANCE: method comprises determining the direction of carrying out counter-heading drivage using instrumental method, drilling counter-heading drivage, charging and blasting the holes, airing the bottomhole and removal of the exploded rock mass. In one of the counter-heading drivage the hole is drilled in the center of the bottomhole. Before drilling in the counter-heading drivage opposite to it the direction of counter-heading drivage is additionally determined on the greatest degree of exposure of vibration of the surface of the rock mass by the palm of the hand by applying the palm of the hand to the surface of the rock mass in the center and in other parts of the bottomhole.;EFFECT: reduction of costs for counter-heading drivage at their breakthrough by reducing the amount of deviation from the predetermined direction at their breakthrough.;3 dwg