摘要
自燃发火倾向性是煤自燃火灾的主要影响因素之一。通过对国内外煤自燃倾向性鉴定方法的分析,指出了我国现行的煤自燃倾向性的不足之处。根据煤自燃机理的煤、氧复合理论,建立了依据煤在低温氧化过程中的吸氧率、放热强度和着火燃烧阶段的活化能作为鉴定煤自燃发火倾向性影响因素的模糊综合评判新方法。在此基础上,用热重分析方法测试了5种煤样在相同条件的指标参数,建立模糊综合评判模型,通过模糊运算得出评判5种煤样自燃发火倾向性的综合指标。验证表明,该方法有较强的实用性,其评判结果与5种煤样的实际自燃发火期趋势一致。
Spontaneous combustion tendency is one of the major influence factors for coal spontaneous combustion.Based on the analysis of appraisal methods of coal spontaneous combustion tendency,the disadvantages of actual appraisal method of coal spontaneous combustion tendency in China are pointed out.According to the coal-oxygen complex theory of coal spontaneous combustion mechanism,taking oxygen absorptivity,exothermic intensity and activation energy during coal combustion process as influencing factors for appraising coal spontaneous combus-tion tendency,fuzzy comprehensive evaluation method was developed.On this condition,five coal samples pa-rameters under the same conditions were tested by thermogravimetry analysis method,and fuzzy comprehensive evaluation model was established.Then synthetic indexes of spontaneous combustion tendency for five coal sam-ples were obtained by fuzzy calculation.Through test,this method is of better practicability,and the evaluation results are of complete consistency with the tendency of actual coal spontaneous combustion.
出处
《煤田地质与勘探》
CAS
CSCD
北大核心
2011年第6期16-19,23,共5页
Coal Geology & Exploration
关键词
煤
热重实验
动力学分析
模糊综合评判
自燃发火倾向性
coal
thermogravimetry experiment
dynamics analysis
fuzzy comprehensive evaluation
spontaneous combustion tendency
