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DONG Shaopu, LIU Jian, LI Yanchang, BAI Xuesong, LIU Qinghai. Experimental Research on Indicator Gas Spontaneous Combustion in Dongrong No.1 Coal Mine based on Principal Component Analysis[J]. Mining Safety & Environmental Protection, 2019, 46(2): 1-5.
Citation: DONG Shaopu, LIU Jian, LI Yanchang, BAI Xuesong, LIU Qinghai. Experimental Research on Indicator Gas Spontaneous Combustion in Dongrong No.1 Coal Mine based on Principal Component Analysis[J]. Mining Safety & Environmental Protection, 2019, 46(2): 1-5.
shu

Experimental Research on Indicator Gas Spontaneous Combustion in Dongrong No.1 Coal Mine based on Principal Component Analysis

  • 1. College of Safety Science and Engineering, Liaoning Technical University, Huludao 125105, China;

  • 2. Key Laboratory of Thermal Disaster and Prevention, Ministry of Education, Huludao 125105, China;

  • 3. Heilongjiang Coal Mine Safety Supervision Bureau, Haerbin 150007, China

More Information
  • Received Date: April 08, 2018
  • Revised Date: March 10, 2019
  • Available Online: September 12, 2022
    Graphical Abstract
    • Abstract
  • In order to effectively prevent the disaster caused by coal spontaneous combustion in Dongrong No. 1 Coal Mine, the spontaneous combustion characteristics of coal seams in this coal mine were studied through the experiment of coal spontaneous combustion oxidation, the critical temperature of the marked gas in the experimental coal sample was determined and the variation of its volume fraction with temperature was analyzed; the principal component analysis method was used to comprehensively evaluate the nine indexes such as temperature, φ(CO), φ(C2H4)/φ(C2H6), etc., and the dominant index in predicting coal spontaneous combustion was selected. The results showed that the critical temperature of index gas and its regularity can reflect the spontaneous combustion process of coal. According to the principle of index gas optimization and the optimization results of principal component analysis, a prediction and forecast system for coal spontaneous combustion of Dongrong No.1 Coal Mine was established. φ(CO),φ(C2H6),φ(C2H4) and φ(C2H2) were selected as the main indicators and the ratio of φ(C2H4)/φ(C2H6) was selected as the auxiliary indicator. The accuracy of early prediction of coal spontaneous combustion was improved, and the prevention of mine fire was realized.
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