Analysis on Spontaneous Combustion Oxidization Law ofⅡ Type Spontaneous Combustion Seam
WEI Wei
Abstract：According to the status of Ⅱ type spontaneous combustion seam easy to cause a coal spontaneous combustion,taking No.10 seam of No.1023 coal mining face in Yuandian No.1 Mine as a study object,a study was conducted on the spontaneous combustion oxidization law of coal in the goaf of No.1023 coal mining face.With the gas drainage pipeline in the goaf,the goaf temperature was measured and the dynamic variation of O2 ,CO2 density and others in the goaf with the coal mining face advanced were measured and analyzed.The results showed that the CO2 concentration distribution within the goaf could meet the air leakage filed distribution law of the goaf in the coal min-ing face with one source and one integration,and the air returning side would become a suffocation zone earlier than the air income side. The distribution scope of the spontaneous combustion three zones in the goaf would be that the no combustion zone was in a distance of 0~18.8 m to the central part of coal mining face,the spontaneous combustion zone was in a distance of 18.8~ 71.1 m to the central part of coal mining face and the suffocation zone was in a distance over 71.1 m to the central part of coal mining face.In accordance with the scope of the divided spontaneous combustion three zones,the lowest suitable mining speed of coal mining face calculated was 42 m/ month.
Keywords：coal spontaneous combustiongoafspontaneous combustion oxidization lawsafety mining
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 47-50 )