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Relating Moisture Content, Suction and Shear Strength of an Ore

机译：与矿石的水分含量，吸力和剪切强度有关

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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：矿石是采矿的极有价值的产品。当潮湿时，矿石的较细级分会变粘，从而在运输过程中引起问题，例如对矿石通过壁的粘附。本文以机械方式显示了水分如何引起吸力和剪切强度的升高。采用了非饱和土力学的方法和概念。考虑了矿石的分形特性和孔径分布。使用有效应力框架和Mohr-Coulomb破坏准则来解释在一定湿度范围内对矿石进行的三轴压缩测试的结果。然后得出吸力，含水量，空隙率和强度之间的关系，从业人员在处理矿石和其他分形土工材料时可以使用它们之间的关系。

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