摘要
根据寺河矿初采及正常回采期间瓦斯涌出实际,简要分析了瓦斯来源。根据采动卸压垂向分布规律,设计并施工了低位钻孔、中位钻孔、高位钻孔、底板拦截钻孔("四位"钻孔),互相配合共同抽采瓦斯,各钻孔达到并超出预期效果,形成"四位"钻孔瓦斯抽采模式,提高了采空区瓦斯抽采量,一定程度上解决了工作面初采及正常回采期间的瓦斯问题。
According to the actual situation of gas drainage in initial and normal mining in Sihe coal mine,the resource of gas was analyzed. Based on the vertical distribution of mining pressure relief,a 4-level drilling gas drainage system was designed and constructed,including low-level drilling,mid-level drilling,high-level drilling and floor interception drilling,which work coordinately for gas drainage. The drainage effect of each drilling exceeded the expectation. The 4-level drilling gas drainage model was established,so as to improve the gob gas drainage efficiency,solve the gas problem,to some extent,in working face initial mining and normal mining.
出处
《煤炭工程》
北大核心
2017年第1期52-55,共4页
Coal Engineering
基金
山西省煤层气联合研究基金资助项目(2012012009)
关键词
低位钻孔
中位钻孔
高位钻孔
底板拦截钻孔
瓦斯抽采
lowly-level drilling
mid-level drilling
highly-level drilling
working face floor interception drilling
gas drainage
