METHOD FOR VENTILATION OF BLIND WORKING Russian patent published in 1998 - IPC

FIELD: mining industry. SUBSTANCE: according to method for ventilation of blind working, fouled air is evacuated from work face zone by means of circulation vortex motion. Installed in one of contours of circulation vortex motion is source of draft, and exercised is intensive movement of air through contours of circulation vortex motion. Evacuation of fouled air from work face zone is effected through one side of each contour of circulation vortex motion. Delivery of fresh air is effected through other side of each contour. Source of draft is moved in cyclic manner along mine working from one contour to another. Application of aforesaid method increases efficiency of ventilation along entire length of blind underground working. EFFECT: higher efficiency. 1 dwg