R Ventilation System for Gassy Goafs

This system is suitable for coal seams with moderate gas emmission rates (5 – 10 m3/t). The bleed returns from the goaf are diluted with 20 -30 m3/s of intake air from the panel intakes, depending on gas emission rates. The longwall face is ventilated with 15 – 25 m3/s of air.

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