我国煤层大多瓦斯含量较高,只采煤不采气、单打一的勘察开采,不仅造成煤层气这种宝贵资源的严重浪费,而且还造成煤矿瓦斯事故频发,造成大量人员的伤亡,给国家带来巨大经济损失。据统计,全国现有2万多个煤炭生产矿山,大多数没有开展煤层气勘察评价。我国每年采煤排放煤层气约150 Most coal seams in our country have a high gas content. Only coal mining does not produce gas and singles one of the exploration and exploitation not only cause serious waste of valuable resources such as coal bed methane but also cause frequent accidents of coal mine gas and cause a large number of casualties to the country Bring huge economic losses. According to statistics, there are over 20,000 coal mines in the country and the majority of them do not carry out CBM prospecting and evaluation. China’s annual coalbed methane emissions of about 150