METHOD FOR DUST AND GAS REMOVAL FROM STOPE ORE Russian patent published in 2012 - IPC E21F1/00 

FIELD: mining.

SUBSTANCE: method consists in clean air supply into the bottom hole and removal of contaminated air from the bottomhole zone. In this respect, the configurations of circulating air swirling motion are built up. For this purpose, the worn chambers are broken into the airway. In this respect, the additional draft source, mounted in the worn chamber, is aligned for work in direction to the airway, and the mix of fresh air with the airflow contaminated with dust and gas is removed through the worn chamber and airway. In this respect, fresh air is directed to workable stope ore through the haulage roadway or by means of additionally installed ventilation draft source with air feeder, which end is placed in the working chamber, or by means of the adjusting airway stoppings, one of which is mounted on the haulage roadway on the way of air current motion between the working and worn chambers, and the other one is mounted at the mouth of worn chamber, placed in axial alignment with developed stope ore, which is gone away from it through the haulage roadway.

EFFECT: gain in air supply performance.

6 cl, 2 dwg