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通过对“品”字巷道系统综放工作面瓦斯来源分析和瓦斯浓度在空间和时间上分布规律，阐明了瓦斯涌出与工作面推进速度、风量的关系以及泄排巷的数量、位置对瓦斯涌出的影响。
Through the gas sources analysis and gas distribution in the fully mechanized coal caving face of the roadway system with “product” word, the relationship between gas emission and working face propulsion speed and air volume as well as the number of discharge roadways are clarified. Gushing effect.