煤炭工程 ›› 2020, Vol. 52 ›› Issue (3): 108-112.doi: 10.11799/ce202003022

• 研究探讨 • 上一篇    下一篇

珲春地区高瓦斯矿井煤自然发火标志气体研究

靳磊,刘见中,姚海飞,张思睿   

  1. 1. 煤炭科学技术研究院有限公司安全分院
    2. 煤炭科学研究总院
  • 收稿日期:2019-08-30 修回日期:2020-03-04 出版日期:2020-03-10 发布日期:2020-05-11
  • 通讯作者: 靳磊 E-mail:jinlei870@163.com

Research on the mark gas of coal spontaneous combustion in Hunchun area

  • Received:2019-08-30 Revised:2020-03-04 Online:2020-03-10 Published:2020-05-11

摘要: 为了探究珲春地区高瓦斯矿井煤自然发火情况,选取该地区板石煤矿22、23a和八连城煤矿18#、26#共4个煤层进行程序升温特性实验,分析了CO及烃类气体产生量随温度的变化规律,优选自然发火标志气体,测算煤自燃临界温度。结果表明,板石22、23a和八连城18#、26#四个煤层的自燃临界温度分别为101.0℃、97.6℃、121.0℃、169.1℃。CO和C2H4的初现温度大约在30℃与80~120℃,且产生量随温度单调递增,可作为煤自燃预测预报的主要参考指标|而同时,为了保证检测的全面与准确,还可以将规律性良好的其他烃类气体、烯烷比和链烷比进行辅助参考。

关键词: 高瓦斯矿井, 自然发火, 标志气体, 程序升温, 临界温度

Abstract: In order to explore the spontaneous combustion of coal in the high-gas mine in Hunchun area, four coal seams of Banshi 22, 23a and Baliancheng 18# and 26# were selected for the programmed temperature characteristic experiment. The variation rule of CO and hydrocarbon gas production with temperature was analyzed, the indicator gas index of spontaneous combustion was optimized, and the critical temperature of coal spontaneous combustion was calculated. The results show that the critical temperature of spontaneous combustion at Banshi 22, 23a and Baliancheng 18# and 26# is 101.0℃、97.6℃、121.0℃、169.1℃. CO and C2H4 are taken as the main reference indexes for the prediction and forecast of coal spontaneous combustion, supplemented by other hydrocarbon gases, chain-alkane ratio and olefin ratio with good regularity.

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