At the same time, methane effusing from the coal seam being worked increases, and the emphases of methane control could be put on the methane effusing from coal seam being worked. 而大采長(cháng)綜放工作面本煤層瓦斯涌出量增大，則需要增加通風(fēng)量或者采用新的通風(fēng)方式。
the fully-mechanized coal winning face的相關(guān)資料：
滬公網(wǎng)安備 31011502000490號
電信業(yè)務(wù)許可證編號：滬B2-20190700
