| 煤岩结构与煤体裂隙分布特征的研究 |
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| 引用本文： | 张春雷,李太任,熊琦华.煤岩结构与煤体裂隙分布特征的研究[J].煤田地质与勘探,2000,28(5):26-30. |
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| 作者姓名： | 张春雷 李太任 熊琦华 |
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| 作者单位： | 1. 石油大学 北京昌平 102200; |
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| 摘 要： | 通过对河东煤田太原组8#煤层的19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。
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| 关 键 词： | 煤岩结构 裂隙 分形 渗透性 煤层气 |
| 收稿时间： | 1999-12-02 |
| 修稿时间： | 1999-12-02 |
RELATIONSHIP BETWEEN LITHOSTRUCTURE AND FRACTURE DISTRIBUTION IN COAL |
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| Zhang Chunlei,Li Tairen,Xiong Qihua.RELATIONSHIP BETWEEN LITHOSTRUCTURE AND FRACTURE DISTRIBUTION IN COAL[J].Coal Geology & Exploration,2000,28(5):26-30. |
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| Authors: | Zhang Chunlei Li Tairen Xiong Qihua |
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| Institution: | 1. 1. University of Petroleum, Beijing;2. Taiyuan Science and Technology University |
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| Abstract: | coal samples from coal seam No.8 of Taiyuan Formation,Hedong coal field,are measured for structure classification,micro fractal characteristics and fracture densities.The research focused on relationship between lithological struchures and fracture distributions.The results show that the difference of fracture densities in different lithotype bands is large.The fractures mainly distributed in vitrain bands.In vitrain bands the density and fractal dimension of fractures related to the thickness and lithotype of adjecent bands.The study on coal lithostructures is of great significance for predicting the permeability of coal seam. |
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| Keywords: | lithostructure fracture fractal permeability coalbed gas |
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