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排土场大量堆存的散体容易诱发泥石流、滑坡等地质灾害,研究散体的物理力学性质是分析排土场边坡稳定性的重要环节。该文应用分形几何理论和现场原位大面积直剪试验,通过对大孤山铁矿排土场散体粒度和抗剪强度进行分析研究,建立了不同级配散体抗剪强度指标c值、φ值与分维数D之间的关系,初步论证了分形几何理论在联系散体微观构成与宏观力学性质中的作用。
It is easy to induce debris flow and landslide and other geological disasters. The study of the physical and mechanical properties of the bulk is an important part of analyzing the slope stability of the dump. In this paper, fractal geometry theory and on-site large-area direct shear test are used in this paper. By analyzing the granularity and shear strength of Dagushan iron ore dump, the shear strength index c , Φ value and the fractal dimension D, the preliminary demonstration of the fractal geometry theory in contact with the microstructure and macroscopic mechanical properties of the role.