DEEP PIT VENTILATION METHOD Russian patent published in 2015 - IPC E21F1/00 

FIELD: mining.

SUBSTANCE: method includes removal of polluted air from dead-air spaces by means of the air-blowing machine through the axial elastic channel of the inflatable pipeline supported in excavated space of the pit by system of ropes and by the force of excessive static pressure in the inflatable pipeline wall, and movement of the pipeline in dead-air spaces, the process of removal of polluted air from dead-air spaces is maintained by its blowing from periphery of dust and gas accumulations towards the suction hole by means of fresh air flows supplied from outlets on external surface of inflatable wall of the pipeline, excessive static pressure and flow rate of fresh air, required for formation of flows, inside the inflatable wall are provided by means of additional air-blowing machine, and movement of the pipeline in dead-air spaces is controlled by regulation of total impulse of flows from outlets.

EFFECT: improvement of efficiency of ventilation of large dead-air spaces of deep pits due to expansion of the zone of active operation of ventilating pipeline.

1 dwg