Research On Distribution Regularity Of Spontaneous Combustion Three Zones In Coal Seam 11# From Xinji No.2 Coal Mine

Coal has been in the seven disasters in our country, the state-owned large-scale coal mine spontaneous combustion is particularly prominent, especially the generation of coal. Therefore, the prevention and control of coal spontaneous combustion is the key to grasp the goaf spontaneous combustion "three zone" range.The paper in Xinji No.2 Coal Mine 121109 working face as the research background, through theoretical analysis, experimental analysis, CFD simulation and field test of the unity of means of coal spontaneous combustion were systematic research and analysis.Through the low temperature oxidation optimized the coal seam with CO and ethylene (C2H4) of two kinds of gas as a marker of prediction of spontaneous combustion gas for forecasting coal spontaneous combustion provides an important basis for the.Through the theoretical analysis and in the actual situation of the mined out area established gob mathematical and physical model, according to the standard division of air leakage intensity the recovery of goaf spontaneous combustion "three zones" analog value range. According to the temperature division of coal spontaneous "empty area three zone, combined with numerical simulation, the coal spontaneous" empty zone three zone. According to the research results, combined with the 121109 full mechanized mining face situation of the prevention of coal spontaneous combustion comprehensive technical measures.