基于煤自燃大型模拟试验的采空区遗煤耗氧速率研究  

Research on Oxygen Consumption Rate of Residual Coal Based on Large-scale Simulation Experiment of Coal Spontaneous Combustion in the Goaf

作　　者：任广意 谢军[1,2] 王怡 REN Guangyi;XIE Jun;WANG Yi(College of Safety and Environmental Engineering,Shandong University of Science and Technology,Qingdao,Shandong 266590,China;State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology,Shandong University of Science and Technology,Qingdao,Shandong 266590,China)

机构地区：[1]山东科技大学安全与环境工程学院,山东青岛市266590 [2]山东科技大学矿山灾害预防控制省部共建国家重点实验室培育基地,山东青岛市266590

出　　处：《矿业研究与开发》2020年第10期113-117,共5页Mining Research and Development

基　　金：国家自然科学基金资助项目(51674157).

摘　　要：为了研究采空区遗煤自燃过程中耗氧速率与温度的关系,对大屯煤炭公司姚桥煤矿8号煤进行采空区自然发火大型模拟试验研究。依托采空区煤自燃大型模拟试验系统,考虑实际采空区遗煤的赋存状态、蓄热环境等因素,设计构建采空区煤自燃过程试验装置,模拟采空区遗煤在相似模拟条件下的煤自燃进程。通过温度检测仪和气相色谱仪等设备记录试验过程中遗煤的温度、CO、CO2、CH4的产生和氧气的消耗等数据,并通过MATLAB分析遗煤耗氧速率与温度的关系。结果表明:采空区遗煤自燃过程中CO、CO2、CH4等指标气体的产生量呈递增趋势,采空区遗煤耗氧速率与温度呈近似指数函数关系。In order to study the relationship between oxygen consumption rate and temperature in the process of spontaneous combustion of the residual coal,a large-scale simulation experiment of spontaneous combustion in the goaf was carried out in the No.8 coal area of Yaoqiao Coal Mine of Datun Coal Company.Relying on the large-scale simulation experiment system for coal spontaneous combustion in the goaf,and considering the occurrence status of the residual coal in the actual goaf,heat storage environment and other factors,an experimental device was designed and constructed to simulate the process of spontaneous combustion of residual coal in the goaf under similar simulation conditions.The data,such as temperature,the production of CO,CO2 and CH4,as well as oxygen consumption,was recorded by devices of temperature detector and gas chromatograph.And the relationship between oxygen consumption rate and temperature was analyzed by MATLAB.The results show that the production of CO,CO2,CH4 and other index gases in the process of spontaneous combustion of residual coal in the goaf presents an increasing trend,and the oxygen consumption rate has an approximate exponential function relationship with temperature.

关 键 词：采空区遗煤 自燃 模拟试验 耗氧速率 

分 类 号：TD752[矿业工程—矿井通风与安全]