青东煤矿10煤层标志性气体优选及自燃“三带”划分  

Optimization of index gases and division method of spontaneous combustion "three zones" in 10 coal seam of Qingdong Coal Mine

作　　者：孙留涛[1,2] 段宇建 黄均泽 SUN Liutao;DUAN Yujian;HUANG Junze(Key Laboratory of Gas and Fire Control for Coal Mines,China University of Mining and Technology, Xuzhou 221116,China;School of safety Engineering,China University of Mining and Technology, Xuzhou 221116,China;Preparatory Office,Xinhu Coal Mine,Bozhou 233600,China)

机构地区：[1]中国矿业大学煤矿瓦斯与火灾防治教育部重点实验室,江苏徐州221116 [2]中国矿业大学安全工程学院,江苏徐州221116 [3]信湖煤矿筹备处,安徽亳州233600

出　　处：《工矿自动化》2018年第11期56-61,共6页Journal Of Mine Automation

基　　金：国家自然科学基金项目(51074158)

摘　　要：针对青东煤矿1078工作面自然发火问题,通过实验室研究和现场测试相结合的方法优选确定了自然发火标志性气体的主副指标:CO和C2H4气体可作为10煤层煤氧化自燃的主要标志性气体,烯烷比和链烷比作为10煤层煤氧化自燃标志气体的辅助指标。采用采空区氧气浓度变化规律和温度变化趋势2个指标划分了采空区自燃"三带":距工作面0～31m处为散热带,31～78m处为自燃带,78m以外为窒息带。该研究成果为1078工作面自然发火治理提供了科学依据及理论指导。In view of problem of natural fire on 1078 working face of Qingdong Coal Mine,through a combination of laboratory research and on-site testing,the main and auxiliary indicators of spontaneous combustion index gases were optimized:CO and C 2H 4 can be used as main indexes of oxidation and spontaneous combustion of coal in 10 coal seam,olefin ratio and alkane ratio are used as auxiliary indexes of oxidizing spontaneous combustion index gas of coal in 10 coal seam.The spontaneous combustion"three zones"in goaf were divided by two indicators of oxygen concentration variation law and temperature change trend in goaf:the heat dissipation zone is 0~31 m from the working face,the spontaneous combustion zone is 31~78 m from the working face,and the suffocation zone is 78 m far away from the working face.The research results provide scientific basis and theoretical guidance for natural fire control on 1078 working face.Key words:

关 键 词：炭开采 煤炭自燃 标志气体 自燃“三带” 散热带 自燃带 窒息带 

分 类 号：TD752[矿业工程—矿井通风与安全]