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系统总结了岩石脆性破裂断口分维的计算方法及其局限性，指出岩石脆性破裂断口的分形研究应在宏观和微观层次上进行，同时应注重考察断口分维参数的物理意义。断口结构特征是岩石动态破裂过程的静态反映，蕴含着岩石断裂机制的各种信息，分维可作为断口定量描述的参数。
The fractal dimension calculation method and its limitation of brittle fracture in rock are summarized. It is pointed out that fractal analysis of brittle fracture in rock should be carried out on macroscopic and microcosmic level, and the physical meaning of fracture fractal dimension should be paid attention to. The structural features of the fracture are the static reflection of the dynamic fracture process of the rock and contain various information about the fracture mechanism of the rock. The fractal dimension can be used as the parameter for the quantitative description of the fracture.