PIT VENTILATION METHOD Russian patent published in 2016 - IPC E21F1/00 

FIELD: mining.

SUBSTANCE: invention can be used in artificial ventilation of dead zones of deep pits. Pit ventilation method involves arrangement in pit and outside of air pipeline channels and flooding of heat exchange sections of these channels in adjoining to natural water source carrier, heat preparation of air inside flooded channels with change of its temperature to temperature of water, arrangement of air exchange of pit atmosphere with environment at air pipeline channels by means of sources of power and control of aerodynamic air flow parameters in channels. Pit atmosphere air exchange with ambient medium in cold season is performed by injection in lower zone of pit of heated inside flooded fresh air channels, and control of aerodynamic air flow parameters in channels is performed by release of part of injected air via air valves, air distribution systems mounted in upper part of pit.

EFFECT: proposed solution is increased efficiency of power action means to air ventilation pool pit at energy deficiency instability inside pit atmosphere.

1 cl, 1 dwg