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通过对河东煤田太原组 8# 煤层的 1 9个煤样进行煤岩结构划分、裂隙微观分形特征和裂隙密度测量 ,研究了煤岩结构与裂隙分布特征的关系。结果表明 :不同煤岩类型条带中 ,裂隙密度具有较大的差异 ,镜亮煤条带是裂隙分布的主要部位 ;镜煤条带中裂隙的密度和分维数与条带厚度、相邻条带煤岩类型有关 ;全煤样裂隙密度和裂隙分维数与煤岩结构类型有密切关系。煤岩结构的研究在预测煤层的渗透性方面有重要意义。
Through the coal and rock structure division, microscopic fractal characteristics and crack density measurement of 19 coal samples from 8 # coal seam of Taiyuan formation in Hedong coalfield, the relationship between coal rock structure and fracture distribution characteristics was studied. The results show that there are great differences in fracture density among different types of coal and rock types, and the microscopic bright coal band is the main part of the fracture distribution. The density and fractal dimension of the fracture in the coal band are similar to the strip thickness, The type of coal and rock is related to banding. The fracture density and fracture fractal dimension of the whole coal are closely related to the type of coal and rock structure. The study of coal and rock structure is of great significance in predicting the permeability of coal seam.