综采面下邻近煤层瓦斯抽放技术应用探讨  

Application of Gas Drainage Technology in Lower Adjacent Seam at Fully-mechanized Working Face

作　　者：张晓兵 Zhang Xiaobin(Guandi Colliery,Xishan Coal&Electricity Group Co.,Ltd.,Taiyuan,Shanxi 030022)

机构地区：[1]西山煤电集团官地矿,山西太原030022

出　　处：《江西煤炭科技》2021年第2期183-185,共3页Jiangxi Coal Science & Technology

摘　　要：西山煤电官地矿16506工作面回采期间,切眼内底板瓦斯涌出明显,严重影响安全生产。针对这一情况,通过分析瓦斯来源,采取了下邻近层长走向钻孔施工工艺,对下邻近层及采空区的瓦斯实施抽采治理;工程结果表明,钻孔接入抽采系统后,工作面月平均瓦斯抽采量由3.8 m^(3)/min提升至5.0 m^(3)/min,工作面切眼内底板瓦斯浓度由1.0%左右降至0.2%左右,工作面回风流瓦斯浓度由0.7%降至0.5%左右,回风隅角瓦斯浓度降低至0.4%左右,瓦斯治理效果明显。Aiming at the floor gas emission from open-off cut in mining at 16506 working face of Guandi Colliery,the author proposes the construction technology with long-strike borehole to extract gas in lower adjacent seam and goaf,which can increase the monthly average gas drainage quantity from 3.8 m^(3)/min to 5.0 m^(3)/min at working face,decrease the gas concentration in open-off cut of working face from 1.0%to 0.2%,in return current from 0.7%to 0.5%,in return airway corner to 0.4%with remarkable control effects.

关 键 词：综采面 底板瓦斯涌出 走向长钻孔 下邻近层抽采 效果良好 

分 类 号：TD712.622[矿业工程—矿井通风与安全]