采空区遗煤氧化规律及注氮防灭火研究  

Study on Left-over Coal Oxidation Law and Fire Prevention and Extinguishing by Nitrogen Injection in Goaf

作　　者：康雁军 Kang Yanjun(Beixinyao Colliery,Jinneng Holding Coal Industry Group,,Xinzhou,Shanxi 036700)

机构地区：[1]晋能控股煤业集团北辛窑煤矿,山西忻州036700

出　　处：《江西煤炭科技》2024年第4期156-159,共4页Jiangxi Coal Science & Technology

摘　　要：北辛窑矿在8406工作面采空区瓦斯抽采过程中存在遗煤自燃的风险,通过现场测试和数值模拟,划分了工作面采空区自燃“三带”区域。为了防止采空区遗煤氧化,对其进行氮气注入,结果表明:采空区最高温度降低9℃,CO最高浓度降低6 ppm,采空区中的氧化区域缩小,说明氮气注入对采空区遗煤氧化有较好的抑制作用。Aiming at the left-over coal spontaneous combustion during gas drainage in goaf,the author proposes the nitrogen injection to prevent the left-over coal oxidation in the classified spontaneous combustion“three zones”through field testing and numerical simulation,whose results show that it can reduce the oxidation area with good inhibition by reducing the highest temperature by 9℃and highest CO concentration by 6 ppm.

关 键 词：采空区 遗煤自燃 自燃三带 注氮 

分 类 号：TD752.2[矿业工程—矿井通风与安全]