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从七尺煤层瓦斯涌出量在炮采或综采情况下的数字统计分析中,比较明显的看出瓦斯涌出量(单位时间的瓦斯量)与工作面产煤量成正比是绝对的,这是综采工作面瓦斯涌出在时间上或在空间上直接威胁安全生产的重要因素,也是工作面供风量大小的根本
From the statistical analysis of gas emission from 7 ft coal seam under blast mining or fully mechanized mining, it is obvious that the gas emission (the amount of gas per unit time) is proportional to the coal production in the working face. This is an important factor that the gas emission of fully mechanized coal face is a direct threat to safety in terms of time or space. It is also the basis for the amount of air supplied to the working face