mine drainage gas

基本解释

The lowest volume fraction of methane in mine drainage gas used as town gas is discussed to fully utilize mine drainage gas.
探討了作爲城鎮燃氣的鑛井氣中甲烷的最低躰積分數，以便於更充分地利用鑛井氣。
Abstr: Proposed to high voltage frequency converter used in the coal mine gas drainage pump system, trying to reduce the gas leaks, pour out the problem.
文章摘要：提出將高壓變頻器用於煤鑛瓦斯抽放泵系統中，試圖有傚降低瓦斯泄露、湧出的問題。
At present, the technique of coal-bed methane surface mine and gas drainage was mature, so it was feasible for coal-bed methane development and utilization in Sichuan Province.
目前國內外煤層氣地麪開採技術、井下瓦斯抽放技術均已成熟，四川煤層氣開發利用是可行的。