以Sierpinski垫片和Menger海绵模型为基础,提出了由孔隙体积分形模型、颗粒体积分形模型及孔径或粒径分布分形模型组成的两大类岩土体分形模型,指出了模型间的内在联系.通过比较与分析,发现该两类岩土体分形模型能将国内外岩土体分形模型统一起来,从而形成了两类统一的模型.Katz对砂岩的实验结果表明砂岩的分形特性可采用第一类分形模型表示,以软黏土微观孔隙数据为基础,证明了软黏土满足第二类分形模型. Based on the Sierpinski gasket and the Menger sponge model, fractal models of two types of rock mass composed of pore volume fractal model, particle volume fractal model and aperture or particle size distribution fractal model are proposed, and the intrinsic relations between the models are pointed out. Through the comparison and analysis, it is found that the fractal models of these two types of rock and soil can unify the fractal models of rock and soil at home and abroad, and form two types of uniform models.Katz’s experimental results show that the fractal characteristics of sandstone can be the first The fractal model shows that the soft clay satisfies the second type of fractal model based on the microscopic pore data of soft clay.