屯兰矿地面瓦斯抽放钻孔施工工艺研究  

Research on Borehole Construction Process of Ground Gas Drainage in Tunlan Coal Mine

作　　者：岂春明 

机构地区：[1]西山煤电集团有限责任公司,山西太原030053

出　　处：《煤炭工程》2015年第3期53-54,57,共3页Coal Engineering

摘　　要：根据屯兰矿3号地面瓦斯抽放钻孔的特点,对屯兰矿3号抽放钻孔施工工艺进行了设计,并从开钻前准备、开钻、下套管及固管四方面对钻孔施工进行了论述,结果表明,施工的Φ914mm、孔深360m的瓦斯管道井最大孔斜40°,终孔最大偏斜0.89m,套管顺利下入,固管质量良好,满足施工要求,安全和经济效益明显。According to characteristics of the No. 3 ground gas drainage boreholes of Tunlan Coal Mine,the construction process of drainage borehole was designed,including drilling preparation,drilling,casing and pipe fixing. The maximum hole inclination of the Φ914mm,360 m gas piping shaft was 40＇,final hole maximum deviation was 0. 89 m,the casing was smooth,pipe fixing quality was favorable,the construction safety requirements was satisfied and obvious economic benefit was achieved.

关 键 词：大孔径 地面瓦斯抽放钻孔 扩孔 一次成孔 钻孔施工工艺 

分 类 号：TD712.6[矿业工程—矿井通风与安全]