中文摘要：

将分形理论运用于煤的介观表面结构研究。用分形雏数来表征煤表面粗糙度水平．结合原子力显微镜实验观测手段对煤样品表面进行实验观测，采用功率谱算法得出煤表面介观的分形参数，得到的分形雏数与理论预测值一致．表明运用分形理论，采用功率谱法得出的分形雏数来研究煤的表面结构特征是可行的．图8，参10．

英文摘要：

The research significance about the mesoscopic scale surface of coal structure was introduced, the cent form theories was made use of in lie the research of mesoscopic coal surface structure, fractal dimension was adopt to show the surface roughness. Atomic force microscope was used to experiment,combine with the experiment result, two-dimensional power spectral method was adopt to research the fractal characteristic of coal. The agreement of fractal dimension between calculafional result and theoretic result is good. Result shows that use power spectrum and the cent form theories to research the fractal characteristic of coal surface structure is feasible. 8figs., 10refs.