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针对贵州矿区新田煤矿瓦斯治理存在的一些问题,如抽采钻孔浓度低、流量衰减快,抽采达标时间长,不能有效解决高效抽采瓦斯,直接造成矿井瓦斯抽采率低下,“抽、采、掘”比例失衡,通过采用底抽+冲孔协同石门揭煤技术,增大了煤层渗透率,扩大了钻孔抽采有效影响范围,提高了煤层瓦斯抽采效率,缩短了石门揭煤时间,缓解了新田煤矿抽、采、掘接替紧张局面。
In view of some problems existing in gas treatment of Xintian Coal Mine in Guizhou Mining Area, such as low concentration of pumping and drilling, fast flow decay and long time of pumping compliance, it is impossible to effectively solve the problem of gas drainage with high efficiency and directly result in low gas drainage rate in coal mines. Pumping, mining, digging "ratio imbalance, through the use of bottom pumping + punching cooperation with crosscutting technology, increased coal seam permeability, expanding the effective range of drilling and drainage, improve gas drainage efficiency and shorten the Shimen uncover the coal time, eased Xintian coal pumping, mining, digging for the tense situation.