煤矿安全2018，Vol.49Issue(2)：23-26,4.DOI:10.13347/j.cnki.mkaq.2018.02.007
煤自燃复合指标气体生成规律实验研究
Experimental Study on Formation Laws of Composite Index Gases for Coal Spontaneous Combustion
摘要
Abstract
The composite index gas is less affected by environmental factors and it could timely and accurately predict the coal spontaneous combustion process.In this paper,by using the constant temperature oxidation device,the heat storage environment of the goaf was simulated to study the generation characteristics of the index gas in the oxidation reaction time of the residual coal in goaf.The experiments were conducted with different sizes of coal samples in Guandi Coal Mine.Results of experiment show that the temperature increases,the specific values of O2/(CO+CO2) and H2/CH4 decrease,the specific value of CO/CO2 increases,when the temperature is over 80 ℃,the specific value will change dramatically.With the decrease of particle size,the specific values of H2/CH4 and CO/CO2 increase,and the specific value of O2/(CO+CO2) decreases.The smaller the particle size is,the more obvious the trend is.When the coal sample is heated at 150℃ for about 60 minutes,the change rate of the composite index gas ratio is greatly.关键词
煤自燃/恒温氧化/复合指标气体/变化趋势/采空区/实验研究Key words
coal spontaneous combustion/constant temperature oxidation/composite index gas/variation trend/goal/experimental study分类
矿业与冶金引用本文复制引用
安帮,王俊峰,王涌宇,宋申..煤自燃复合指标气体生成规律实验研究[J].煤矿安全,2018,49(2):23-26,4.基金项目
国家自然科学基金资助项目(51274146) （51274146）
