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.
探讨了作为城镇燃气的矿井气中甲烷的最低体积分数，以便于更充分地利用矿井气。
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：提出将高压变频器用于煤矿瓦斯抽放泵系统中，试图有效降低瓦斯泄露、涌出的问题。
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.
目前国内外煤层气地面开采技术、井下瓦斯抽放技术均已成熟，四川煤层气开发利用是可行的。