双马煤矿4-1煤层自然发火标志气体及临界值研究  

Study on the critical value of spontaneous combustion mark gas in 4-1 coal seam in Shuangma Coal Mine

作　　者：彦鹏 黄光利 张仰强[3,4] 胡全宏 YAN Peng;HUANG Guangli;ZHANG Yangqiang;HU Quanhong(College of Safety Science and Engineering,Liaoning Technical University,Xingcheng 125100,China;Shuangma Coal Mine,CHN Energy,Ningxia Coal Industry Co.,Ltd.,Lingwu 750408,China;State Key Laboratory of the Gas Disaster Detecting,Preventing and Emergency Controlling,Chongqing 400037;CCTEG Chongqing Research Institute,Chongqing 400037,China)

机构地区：[1]辽宁工程技术大学安全科学与工程学院,辽宁兴城125100 [2]国家能源集团宁夏煤业有限责任公司双马煤矿,宁夏灵武750408 [3]瓦斯灾害监控与应急技术国家重点实验室,重庆400037 [4]中煤科工集团重庆研究院有限公司,重庆400037

出　　处：《矿业安全与环保》2020年第2期85-89,98,共6页Mining Safety & Environmental Protection

摘　　要：双马煤矿主采煤层具有自然发火期短、易自燃等特征,为确定合理的煤自然发火预测预报指标,以该矿主采的4-1煤层为研究对象,采用实验分析、现场测试和统计分析等方法,对4-1煤层自然发火标志气体及临界值进行了研究。根据4-1煤层煤样氧化实验与现场实际观测,优选出4-1煤层自然发火标志气体,确定了综采工作面上隅角CO体积分数安全管理值及自燃临界值。在此基础上,建立了煤层自然发火分级预警响应与防灭火技术管理体系。结果表明:CO、C2H4、C2H2、C3H8是双马煤矿4-1煤层自然发火标志性气体;Ⅰ0104105工作面上隅角CO体积分数安全管理值为60×10^-6,自燃临界值为430×10^-6;对应建立了煤层自然发火蓝色(Ⅰ级)、黄色(Ⅱ级)、橙色(Ⅲ级)、红色(Ⅳ级)4级预警响应体系。The coal seam of main mining in Shuangma Coal Mine is characterized by short spontaneous ignition period and easy to be spontaneous.In order to determine the reasonable prediction index of coal spontaneous combustion,taking 4-1 coal seam of main mining as the research object,the experimental analysis,field test and statistical analysis were used to study the critical value of spontaneous combustion mark gas.According to the oxidation experiment and field observation of coal sample in4-1 coal seam,the spontaneous combustion mark gas in 4-1 coal seam was optimized,at the same time,the safety management value of CO volume fraction and the critical value of spontaneous combustion in the upper corner of fully mechanized mining face were determined.On this basis,graded early warning response and fire prevention technology management system of coal seam spontaneous combustion were established.The results show that CO,C2 H4,C2 H2,C3 H8 are the mark gas of spontaneous combustion in 4-1 coal seam of Shuangma Coal Mine;the safety management value of CO volume fraction in the upper corner ofⅠ0104105 working face is 60×10^-6,and the critical value of spontaneous combustion is 430×10^-6;a 4-level warning and response system including blue(Ⅰ),yellow(Ⅱ),orange(Ⅲ),red(Ⅳ)of spontaneous combustion is established.

关 键 词：综采工作面 自然发火 标志性气体 临界值 安全管理浓度 

分 类 号：TD752.2[矿业工程—矿井通风与安全]