煤田地质与勘探Issue(6)：20-23,4.DOI:10.3969/j.issn.1001-1986.2014.06.004
基于热力学模型的煤孔隙结构分形表征
Fractal characterization of pore structure in coals based on thermodynamics model
摘要
Abstract
The pore structure of coal is complex and it is difficult to characterize pore structure by traditional Euclidean geometry. However, fractal theory is an effective method to investigate the irregularities of pore structure. The fractal dimensions of seepage-pores of 10 coal samples collected from Hancheng mining area in Weibei coalfield were obtained using mercury injection experiment based upon thermodynamic fractal model and the geometric properties of pore were quantitatively characterized. The relationship between fractal dimension and permeability was also discussed. The results show that the more adsorption-pores, the higher fractal dimension for the same coal rank. The fractal dimension has a negative correlation with the petrologic permeability of coal. The fractal dimension of seepage-pores of coals can be used as one of the quantitative indexes for evaluation of permeability of coal reservoir.关键词
孔隙结构/压汞/分形维数/热力学模型Key words
pore structure/mercury injection/fractal dimension/thermodynamic model分类
天文与地球科学引用本文复制引用
王秀娟,要惠芳,李伟,张晓辉,阎纪伟..基于热力学模型的煤孔隙结构分形表征[J].煤田地质与勘探,2014,(6):20-23,4.基金项目
国家科技重大专项课题(2009ZX05062-009；2011ZX05062-009) （2009ZX05062-009；2011ZX05062-009）
