摘要
根据祁东煤矿试验区域煤层群赋存及突出危险性,试验研究了保护层工作面倾斜上方专用煤巷结合高位钻孔抽采采空区瓦斯、并运用被保护层卸压及其瓦斯运移至保护层采空区的时空效应,即滞后保护层工作面20～25m施工底板穿层钻孔安全高效抽采被保护层卸压瓦斯创新技术,上述研究成果对类似条件的瓦斯抽采具有重要借鉴作用。
According to coal seams condition and methane bursting danger in Qidong Colliery,this paper presented a new methane drainage technology which included draining gob methane by drilling in coal roadway above protective seam mining face and draining methane of protected coal seam by constructing crossing borehole through floor behind 20-25m of mining face in protective seam.The new technology might provide important reference for methane drainage in mines with similar conditions.
出处
《煤矿开采》
北大核心
2010年第6期86-89,共4页
Coal Mining Technology
基金
国家重点基础研究发展计划(973)项目(2005cb221504)
关键词
远距离
保护层开采
瓦斯
抽采
far distance
protective seam mining
methane
drainage
