大直径钻孔替代通风联络巷可行性研究  

Feasibility study on replacing ventilation connecting roadway with large diameter borehole

作　　者：高占峰 刘瑞杰[1] GAO Zhan-feng;LIU Rui-jie(Anyang Dazhong Coal Industry Co.,Ltd.,Anyang 455133,China)

机构地区：[1]安阳大众煤业有限责任公司,河南安阳455133

出　　处：《煤炭科技》2023年第1期16-20,共5页Coal Science & Technology Magazine

摘　　要：为减少掘进工程量,节约成本,提出了用大直径钻孔来替代原有的通风联络巷。以大众煤矿的12煤柱综采工作面回风巷与专用瓦斯抽采巷之间的通风联络巷为研究对象,利用Fluent模拟软件,对无钻孔无通风联络巷、一组通风联络巷、大直径钻孔替代通风联络巷3种情况下的采空区瓦斯流动状况进行数值模拟。研究发现,通过专用瓦斯抽采巷及上述通风联络巷正常进行采空区瓦斯抽采的情况下,用大直径钻孔替代通风联络巷时的采空区瓦斯抽采效果优于现有的通风联络巷施工方案,且直径大于0.6 m的大直径钻孔完全能够起到替代通风联络巷的作用。In order to reduce the amount of excavation work and save costs,it is proposed to replace the original ventilation connecting roadway with large diameter drilling.Taking the ventilation connecting roadway between the return air roadway and the special gas extraction roadway in the 12 coal pillar fully mechanized mining face of Dazhong Coal Mine as the research object,using the fluent simulation software,the gas flow status in the goaf under three conditions of no ventilation connecting roadway without drilling,a group of ventilation connecting roadway,and large diameter drilling instead of ventilation connecting roadway was numerically simulated.It is found that under the condition that the gas drainage in the goaf is normally carried out through the special gas drainage roadway and the above ventilation connecting roadway,the gas drainage effect in the goaf when the ventilation connecting roadway is replaced by the large diameter borehole is better than the existing ventilation connecting roadway construction scheme,and the large diameter borehole with diameter greater than 0.6 m can completely play the role of replacing the ventilation connecting roadway.

关 键 词：大直径钻孔 替代 通风联络巷 Fluent模拟软件 可行性 

分 类 号：TD712[矿业工程—矿井通风与安全]