沼气在顶板附近呈层状积聚是矿井巷道中沼气局部积聚的最危险和最常见的一种形式。巷道中的风速和瓦斯涌出量是决定沼气层状积聚形成的主要因素。目前已经确定出不会形成沼气层状积聚的风速。但是,沼气层状积聚与瓦斯涌出量、巷道断面上的平均风速和平均沼气含量之间的定量的关系还没 The accumulation of biogas in a layer near the roof is one of the most dangerous and common forms of local accumulation of biogas in mine tunnels. The velocity and gas emission in the roadway are the main factors that determine the formation of biogas lamellae. It has now been determined that a wind-induced accumulation of biogas will not be formed. However, the quantitative relationship between biogas lamella accumulation and gas emission, average wind speed at the roadway section and average biogas content has not yet been established