Study on Coal Reservoir Features and Gas Distribution Law in Lu'an Mining Area
LI Yang
ZHANG Lang
SHU Long-yong
TANG Wen-jie
Abstract：In order to obtain No.3 coal seam reservoir features and gas distribution law in Lu'an Mining Area,the seam reservoir features were systematically analyzed from the seam depth,coal metamorphism degree,seam permeability,coal adsorption features,coal structure and other aspects.Based on the circumstances,the quantitative relationship of the coal gas content and seam depth,coal metamorphism de-gree,seam moisture and ash content were studied,a seam gas content model was established and the distribution law of the seam gas con-tent was obtained.The results showed that No.3 seam in Lu'an Mining Area with high in thickness,stable in deposition,deep the depth, high in metamorphism degree,large in Langmuir volume and low in Langmuir pressure would be favorable to the gas enrichment deposition in the seam.In the mining area,there were many developed broken coal and broken partical coal,and partially mylonite coal.The coal struc-ture was broken,the seam permeability was poor,the permeability was lower than the domestic average level and a gas drainage and utiliza-tion of the seam would be high difficult.Under the same seam depth condition of each block,the gas content in the north part of Changzhi Block would be highest,the gas content in the south part of Xiangyuan Block would be second and the gas content in the middle part of Lu'an Block would be the lowest.
Keywords：coal reservoir featuresseam depthdegree of coal metamorphismgas content
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：5( 65-69 )