液氮防灭火技术在易燃厚煤层综放工作面回撤期间的应用研究  

Application Research of Liquid Nitrogen Fire Prevention and Extinguishing Technology in Withdrawal Period of Fully Mechanized Top-coal Caving Face in Inflammable Thick Coal Seam

作　　者：张国强 李毕 ZHANG Guo-qiang;LI Bi(Matigou Coal Mine,Huating Coal Group Co.,Ltd.,Huating 744100,China;Design and Research Institute,Huating Coal Group Co.,Ltd.,Huating 744100,China)

机构地区：[1]华亭煤业集团马蹄沟煤矿,甘肃华亭744100 [2]华亭煤业集团设计研究院,甘肃华亭744100

出　　处：《煤炭技术》2020年第11期102-104,共3页Coal Technology

摘　　要：针对3503工作面在回采末期及回撤期间易发生自然发火事故,严重影响矿井安全生产的问题,通过实施采空区开区、闭区注液氮技术,并对CO浓度进行了测定,有效降低了回撤期间采空区自然发火事故,确保了回撤安全顺利进行。In view of the problems that spontaneous combustion accidents easily occur at the end of mining and during withdrawal of 3503 working face,which seriously affect the safety production of mine,through the application of liquid nitrogen injection technology in the open and closed areas of goaf,and the determination of CO concentration,the accident of spontaneous combustion in the goaf during withdrawal is effectively reduced,and the safe and smooth operation of withdrawal is ensured.

关 键 词：开区 闭区 注液氮 

分 类 号：TD753[矿业工程—矿井通风与安全]