Hazards of series ventilation:
(1) Decreasing the air quality of the working faces connected in series;
(2) The ventilation resistance of the series ventilation is large, which affects the air supply volume of the mining area;
(3) fire, gas (coal dust) explosion or coal and gas outburst accident, will expand the scope of the disaster.
(1) Decreasing the air quality of the working faces connected in series;
(2) The ventilation resistance of the series ventilation is large, which affects the air supply volume of the mining area;
(3) fire, gas (coal dust) explosion or coal and gas outburst accident, will expand the scope of the disaster.
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