常信煤业90105工作面瓦斯抽采技术探讨  

Discussion on Gas Drainage Technology in 90105 Working Face of Changxin Coal Industry

作　　者：孙琦峥 Sun Qizheng(Qinyuan County Emergency Management Bureau,Changzhi,Shanxi 046500)

机构地区：[1]沁源县应急管理局,山西长治046500

出　　处：《江西煤炭科技》2022年第3期175-177,共3页Jiangxi Coal Science & Technology

摘　　要：根据常信煤业90105工作面瓦斯情况,通过综合分析,制定本煤层瓦斯抽采方法以及采空区瓦斯抽采方法,对本煤层采用平行钻孔预抽方法进行抽采,对采空区瓦斯采用封闭插管方式进行抽采,并对回采期间回风顺槽的瓦斯浓度进行监控。结果表明:工作面日产量为764 t,预抽瓦斯后可解吸瓦斯含量为4.79 m^(3)/t,残余瓦斯含量为0.66 m^(3)/t,均小于8 m^(3)/t,回风巷最大瓦斯浓度为0.36%,可见瓦斯抽采方案设计合理,确保安全生产。According to the gas situation of the 90105 working face of Changxin Coal Industry,and through comprehensive analysis,the paper formulates the gas drainage method of the coal seam and the gas drainage method of the goaf,with coal seam being extracted by parallel drilling and pre-drainage,and drainage being carried out by means of closed intubation.The gas concentration in the return air entry is monitored during the mining period,whose results show that the daily output of the working face is 764 t,the desorbable gas content after pre-gas extraction is 4.79 m^(3)/t,the residual gas content is 0.66 m^(3)/t,both less than 8 m^(3)/t,and the maximum gas concentration in the return air tunnel is 0.36%,proving that the design of the extraction plan is reasonable and ensures safe production.

关 键 词：采空区 瓦斯 抽采方法 治理技术 

分 类 号：TD712.62[矿业工程—矿井通风与安全]