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

FIELD: mining.

SUBSTANCE: method consists in the fresh air supply with ventilator into bottomhole zone and removal of air mixture contaminated with dust and gas from dead stope ore through the wells, which are drilled at regular times in interchamber pillar between the dead and worn stope ores. An interval between the wells doesn't exceed the distance of efficient offscouring of dust-gas mixture with draft source, mounted in the bottomhole space of the dead stope ore. Contaminated air is removed through the worn stope ore, broken into the haulage roadway, and then through haulage roadway. In this respect, the wells from worn stope ore neighbouring to the dead stope ore are preliminary drilled until the configuration of the dead stope ore. Well mouth in the dead stope ore is equipped with effuser, and the well mouth in the worn stope ore is equipped with a coupler connected to the ventilator aligned for the work in direction to haulage roadway. Ventilator is carried over to the well newly uncapped with combined machine.

EFFECT: lowering of air dustiness and reduction of combustive and poisonous gases in the dead stope ore.

4 cl, 2 dwg