变氧环境下林南仓矿煤自燃早期预测模型  

Early prediction model of coal spontaneous combustion under variable oxygen environment in Linnancang Mine

作　　者：赵欢欢 朱令起 张杉[1] 李慧 胡立新 孙昕彤 

机构地区：[1]华北理工大学矿业工程学院,河北唐山063210 [2]河北省矿业开发与安全技术实验室,河北唐山063210

出　　处：《煤炭与化工》2017年第5期1-5,共5页Coal and Chemical Industry

基　　金：校级大学生创新创业训练计划项目(X2016077);河北省自然基金项目(E2014209138);国家自然科学基金项目(51474086)

摘　　要：为了在实验室人工模拟煤的自燃情况,选择8个林南仓矿典型煤样,进行绝氧条件下和8%、12%、14%、17%四个氧浓度环境下的程序升温实验,用气相色谱数据处理系统,直接生成各气体组分数据,并对多组数据进行对比分析。根据多种实验结果,建立CO_2/CO指数形式预测预报模型。借助SPSS软件,通过t检验法对建立的煤自然发火评判模型进行可靠性检验。在变氧环境下,利用建立的指数模型,对CO_2/CO比值随温度变化关系进行拟合,拟合相关系数较高,说明指数函数拟合法可以作为煤自燃早期预测模型。8 typical coal samples in Linnancang Mine were selected to artificially simulate coal spontaneous combustion in laboratory, programmed healing experiments were made under anoxic condition and four oxygen concentration conditions of 8 %, 12 % , 14 % and 17 %, which directly generated date of various gas components and made comparative analysis about the data through gas chromatography data processing system. Based on these results, CO2 / CO exponential formal prediction model was built. With the help of SPSS software, t method of calibration was used to make reliability test for it. In variable oxygen environment, the established expbnential model was used to fit the rate of CO2 / CO concentration varied with the change of different temperature, and fitting correlation coefficient was high, which illustrated that the exponential function fitting method was viable to be early prediction model of spontaneous combustion.

关 键 词：程序升温 CO2与CO浓度比值 变氧环境 预测模型 

分 类 号：X93[环境科学与工程—安全科学] P624.8[天文地球—地质矿产勘探]