METHOD FOR VENTILATION OF BLIND WORKINGS Russian patent published in 1997 - IPC

FIELD: mining industry. SUBSTANCE: this is intended for high efficiency ventilation of underground workings near cutting face. For this purpose, installed in cutting face zone of working is longitudinal partition which separates ventilation ejection unit from remaining part of blind working, and polluted air is withdrawn along wall of working in direction of withdrawing stream. Delivery of compressed air is effected along opposite wall of working. Amount of fresh air delivered to blind working is equal to amount of withdrawn polluted air. Delivery of fresh air is effected due to total mine depression. Longitudinal partition is untight over its length. Besides, additional depression is created by plant in direction of air stream of ejector fan. Fan is located in cutting face part of working between its wall and longitudinal partition. Usable in function of longitudinal partition is such machinery as heading combine, bin-reloader or self-propelled mine car. EFFECT: high efficiency. 1 cl, 1 dwg