摘要
通过立体式本煤层瓦斯抽采,山西岳城煤矿实现地面平均抽放量约11万m3/d,区域内吨煤瓦斯含量6个月降至8 m3/t以下,掘进工作面抽采率达75%,使掘进期间瓦斯浓度保持在0.18%以下。
Through the stereoscopic coal seam gas extraction, Shanxi Yuecheng coal mine average drainage volume reached 110 000 m3/d, relative gas content below 8 m3/t in 6 months in the control areas,drainage rate reached 75% and gas density remain below 0.18% during the tunnel excavating.
出处
《煤炭技术》
CAS
北大核心
2015年第9期152-154,共3页
Coal Technology
关键词
立体式本煤层瓦斯抽采
抽放量
抽采率
瓦斯浓度
stereoscopic coal seam gas extraction
drainage volume
drainage rate
gas density
