METHOD OF UNDERGROUND VENTILATION Russian patent published in 2012 - IPC E21F1/08 

FIELD: ventilation.

SUBSTANCE: method involves feeding the outside air, the organisation of directional movement of air through the tunnels, and removal of exhaust air. At that, the outside air is supplied to an amount equal to 20-30% of the estimated amount of air on excessive heat for ventilation sufficient to maintain the normative content of oxygen and carbon dioxide in the air medium of underground. The forced recycling is carried out between the stations of a mixture of outdoor and tunnel air, in that process the mixture is subjected to a thermodynamic processing to achieve the required for the underground temperature-humidity air conditions.

EFFECT: possibility of year-round, regardless of weather conditions on the surface, maintaining of the regulatory temperature-humidity parameters and, oxygen and carbon dioxide content in the air medium of underground, reduction of intensity of blast flows, reduction of costs and timing of construction of underground lines.

3 dwg