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排放瓦斯有局部通风机(简称局扇)排放瓦斯和全风压排瓦斯两大类,其中局扇排放瓦斯又分掘进工作面临时停风排瓦斯和已封闭巷道或长期不通风巷道的瓦斯排放。全风压排瓦斯包括尾排处理采面隅角瓦斯。除掘进面排瓦斯外都有一个启封密闭排瓦斯问题。
Gas drainage There are two types of partial venting gas and full-pressure drainage gas, of which the partial venting gas is divided into working hours and facing the temporary stoppage of gas drainage and the gas drainage of the closed or long-term non-ventilated roadway . Fully-pressured gas drainage includes tail gas treatment at the corner gas. In addition to driving gas drainage outside the surface have a sealed open row of gas problems.