摘要
丰城矿区煤与瓦斯动力灾害严重,开采的单一B4煤层为缓倾斜中厚煤层,瓦斯压力大、含量高,煤层松软、透气性低。根据丰城矿区的瓦斯赋存特点,统计分析了该矿区186次突出事故的特点及规律;针对矿区随着开采深度增加地应力主导型突出比重增大的特点,提出建立分型治灾措施,建立瓦斯立体抽采系统,并探索使用深孔预裂爆破、顶板走向长钻孔、水力扩孔、水力压裂等新技术措施,为矿区防治瓦斯动力灾害提供理论指导。
The dynamic disasters of coal and gas outburst are serious in Fengcheng Coal Mining Area, the single B4 coal seam being mined is a gently inclined medium-thick seam featured by high gas pressure and content, loose and low gas permeability. In this paper statistical analysis was made on the characteristics and regularity of 186 coal and gas outbursts according to the gas occurrence features in this mining area; to counter to the increase of the dominant outbursts induced by stress with the increase of mining depth, the parting disaster treatment measures were proposed, the stereo gas drainage system was established and exploration was carried out on some new technological measures such as long-hole pre-splitting blast, long-hole drilling along roof strike, hydraulic reaming, hydraulic fracturing and so on, this thus provided theoretical guidance for the prevention and control of gas outbursts in this mining area.
出处
《矿业安全与环保》
北大核心
2016年第1期104-107,共4页
Mining Safety & Environmental Protection
关键词
煤与瓦斯动力灾害
分型治灾措施
瓦斯抽采
立体抽采系统
coal and gas outburst
disaster control measures by classification
gas drainage
stereo gas drainage system
