Gas occurrence law and gas enrichment area determination of 4-2 coal seam in Jianxin Coal Mine
In order to obtain the gas occurrence law and main control factors of the 4-2 coal seam in Jianxin Coal Mine,starting from the characteristics and gas content of the coal seam,the influence of various factors such as geological struc-ture,roof and floor lithology,coal seam thickness,coal seam burial depth,and coal seam floor elevation on the gas content was discussed,and the main control factors of gas occurrence in the 4 2 coal seam in the mine were clarified.The research results show that the gas content of the 4-2 coal seam is linearly positively correlated with the thickness of the coal seam.The thickness of the coal seam directly affects the value of the gas content,and the thicker the coal seam,the greater its gas content value;The gas content in the coal seam is positively correlated with burial depth,and gradually increases with the in-crease of burial depth;There is a negative correlation between gas content and floor elevation.Based on on-site measurement and analysis of gas content on the 4304 working face of the mine,an isoline map of gas occurrence law was drawn,and the gas enrichment area of the working face was obtained.
gas occurrence lawmain control factorscoal seam burial depthgas content
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