本文介绍了分形与分维的基本概念，并综述了地球物理学中分形研究的最新进展。
In the paper, the basic concepts of fractals and fractal dimensions are introduced, and the new advances in the research of fractals in geophysics are also reviewed.
通过对工作面顶板的分形研究，得到了该工作面的分维。
Based on the study of roof fractal, the fractal dimension of roof is obtained.
人们所熟知的常用以代替分形维数的各种度量将在分维谱意义下加以统一，最后讨论多重分形及其分维谱的应用。
The usual fractal dimensions familiar to all us will be united by the multifractal dimension spectrum. Finally, the applications of the multifractal and its dimension spectrum will be discussed.
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