Fractal Structure of Microfractures and Characteristics of Porosity and Permeability in Cataclastic Coals

详细信息   

• 责任者：Chen Weiyin (School of Resources and Earth Science ; China University of Mining and Technology ; Xuzhou 221116 ; China) ; Hang Bo
• 刊名：Coal Geology & Exploration
• 出版年：2012
• 卷期：40(2)
• 关键词：构造煤 ; tectono-coal ; 分形分析 ; fractal analysis
• 页码：p.31-34
• 图表：2 illus., 5 tables, 14 refs.
• 分类号：1004
• issnNo：ISSN1001-1986
• isbnNo：CN61-1155/P

摘要

///Based on the microscopy and the mercury intrusion tests of 9 coal samples from Faer coal mine in Guizhou Province, the authors analyzed the characteristics of micro deformation and microfracture in tectonic coal, and conducted research on permeability of pore. The results show that information dimension of microfractures in cata- clastic coal ranges at least from 1.2 to 1.8. Based on the index of the information dimension, the authors classified the cataclastic coals into 3 categories, with their ranges of dimension as follows： 1.2~1.4, 1.4~1.7, and 1.7~1.8. As for the pore system, brittle tectonic deformation increased the pore volume of macropore and mesopore. The authors also found that the greater the tectonic deformation is, the better the permeability of the tectonic coal of brittle series is.