矿井采空区瓦斯抽放

Gas Drainage in Mined-out Areas

矿井瓦斯是成煤过程中的一种伴生产物,其主要成分是甲烷。它是一种无色、无味、无臭的气体。比空气轻,相对密度为0.554。为了减少和解除矿井瓦斯对煤矿安全生产的威胁,利用机械设备和专用管道造成的负压,将煤层中存在或释放出的瓦斯抽出来,输送到地面或其他安全地点的做法,叫做瓦斯抽放。

Mine gas is the concomitant during the process of coal formation. Its main composition is methane, methane is colorless, odorless, tasteless, lighter than air, and relative density is 0.554. In order to reduce and eliminate threat to safety coal mine production, we use the mechanical equipment and pipelines cause negative pressure, pump the gas existing or release in the coal seam and transport it to the earth or other safe places, which is called gas drainage.