局部积聚瓦斯是煤矿安全生产的一大隐患。因为任何地点的瓦斯浓度达到一定值时,遇到火源就会引起瓦斯爆炸或燃烧,并有可能引起煤尘爆炸。因此,《煤矿安全规程》第140条和《煤矿安全规程执行说明》第27条都做了明确规定。局部积聚瓦斯的地点通常在回采工作面的上隅角、新鲜风流不易进入的高冒处、风速较小的巷道顶板处形成的瓦斯层、停风的 Local accumulation of gas is a major hazard in the safety of coal mines. Because any place of gas concentration reaches a certain value, encounter fire will cause gas explosion or combustion, and may cause coal dust explosion. Therefore, “Coal Mine Safety Code” Article 140 and “Coal Mine Safety Regulations Implementation Notes,” Article 27 have made it clear. Local accumulation of gas is usually located at the upper corner of the mining face, fresh runoff is not easy to enter the high-speed, wind speed at the roof of the roadway formed at the gas layer, the wind stopped