摘要
260051工作面处于阳泉二矿7个高瓦斯区之首的Ⅰ#高瓦斯区带,瓦斯涌出量骤然增大,且地质条件日益复杂,煤层厚度逐渐增大,煤质松软,煤层瓦斯含量和压力大幅度升高,绝对瓦斯涌出量由原0.4m3/min猛增至3.5m3/min左右,为保证260051工作面的安全回采,采取本煤层顺层钻孔抽放、采空区钻孔抽放等综合治理技术,根除了存在的诸多事故隐患,确保了工作面的安全回采。
260051working face lies in the No.1high-gas zone with abruptly-increasing gas emission from 0.4 m^3/min to about 3.5m^3/min due to the increasingly complicated geological conditions,seam thickness,soft coal quality and high gas content and pressure.To ensure the safety mining,the author proposes two gas comprehensive control technologies of drainage with bedding drilling and drilling drainage in goaf,which have eliminated the existing hazards and guaranteed the safety mining at working face.
出处
《江西煤炭科技》
2014年第2期19-20,共2页
Jiangxi Coal Science & Technology
关键词
工作面
瓦斯
顺层钻孔
采空区
抽放
working face
gas
bedding drilling
goaf
drainage
