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Relating Moisture Content, Suction and Shear Strength of an Ore

机译：与矿石的水分含量，抽吸和剪切强度相关

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摘要

Ores are highly valuable product of mining. The finer fractions of an ore become sticky when moist causing problems during their transportation, e.g., adherence to an ore pass wall. This paper shows in a mechanistic way how the moisture gives rise to a suction and an elevation of shear strength. Methods and concepts of unsaturated soil mechanics are adopted. The fractal properties of the ore's particle and pore size distributions are accounted for. Results of triaxial compression tests conducted on an ore at a range of moisture contents are interpreted using the effective stress framework and the Mohr-Coulomb failure criterion. Relationships between suction, moisture content, void ratio, and strength are then derived which may be used by practitioners when dealing with ores and other fractal geomaterials.
机译：矿石是矿业的高价值产品。当在运输过程中导致问题时，矿石的更细分分数变得粘稠，例如，粘附到矿石通墙。本文以机械方式显示了水分如何产生吸力和剪切强度的升高。采用了不饱和土力学的方法和概念。核对矿石和孔径分布的分形特性。使用有效应力框架和MOHR-COULOMB失败标准，解释在一系列水分含量的矿石上进行的三轴压缩试验的结果。然后导出抽吸，水分含量，空隙率和强度之间的关系，在处理矿石和其他分形地质材料时可以由从业者使用。

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