在采用反向通风方式通风的采区,为了防止采煤工作面与回风巷道连接处沼气积聚,采用了各种控制瓦斯涌出量的方法。最有效的控制方法之一就是用风机,经小井或从地面打的通风钻孔隔绝引排瓦斯。这种瓦斯涌出量控制方法已在装备 KM—819型采煤机组的加里宁矿 K_(10)层南13采煤工作面使用,煤层的回采厚度为3.5m。在这个 In the ventilation area adopting reverse ventilation mode, in order to prevent the accumulation of methane at the connection between coal mining face and return airway, various methods for controlling gas emission are adopted. One of the most effective control methods is to isolate the induced gas from the blower, through a borehole or through a vent drilled from the ground. The gas emission control method has been used in Kailin Mine K_ (10) South 13 coal mining face equipped with KM-819 coal mining unit, and the thickness of coal seam is 3.5m. at this