摘要
煤是一种具有复杂孔隙结构的物质，难以用传统的欧几里德理论予以描述．分析用压汞法测出的煤中不同孔径段的比孔容资料，发现最小孔半径在６５～８７ｎｍ的大孔和中孔具有分形特点．可以用分形维数定量表征煤的孔隙特征．分形维数能反映组成煤的煤岩组分的复杂程度和煤结构遭受破坏的严重程度．在煤的变质系列中，中变质程度烟煤的分形维数最大．
Coal is a substance of complicated pore structure, which is difficult to describe by traditional Euclids theory. Based on data of the specific hole volume measured at sections of different diameters by mercury porosimeter, it is found that pores 65～87 mm in radius have fractal feature. Features of pores in coal can be described by fractal dimensions. Fractal dimensions can represent the complexity of coal macerals and severity of failure of coal. In the series of all ranks of coal, the moderately metamorphic bituminous coal has the biggest fractal dimension.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
1998年第4期439-442,共4页
Journal of China Coal Society
基金
国家自然科学基金
煤炭科学基金
关键词
煤
孔隙结构
压汞法
分形维数
分形定量
structure of pores in coal, mercury porosimetry, fractal dimensions
