摘要
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。
The geological disasters such as debris flow, landslide and so on are easy to be caused by the large storaging granular media in dump. Studying on the physical and mechanical properties of granular media is an important link to analyse the stability of dump slope. This paper using the fractal geometry theory and the field direct shear test of large area, through analyzing and studying the granular media size and shear strength of the Dagushan dump, the relationships between the shear strength index c ,φ and fractal dimension value D in different grade granular media are built. The effect of fractual geometry theory in granular media microcosmic form and macroscopic properties is determined preliminarily.
出处
《勘察科学技术》
2015年第6期36-38,共3页
Site Investigation Science and Technology
关键词
分维数
抗剪强度
原位直剪试验
fractal dimension value
shear strength
field direct shear test
