Mine tailings properties and its hypoplastic predictions
Mine tailings properties and its hypoplastic predictions
Copper mine tailings (CMT) are the waste material that remains after the economic fraction is extracted from the mineral ore and consist of a slurry of ground rock, water, and chemical reagents that remain after metallurgical processing. These tailings are considered toxic to the environment, so controlling their environmental toxicity and improving their mechanical properties are crucial. However, only a few studies have focused on assessing such performance by establishing the constitutive behaviour of the CMT. In this paper, we describe mine tailings properties and perform laboratory tests to calibrate clay hypoplasticity. Hypoplasticity is a constitutive model that includes concepts from Critical State Soil Mechanics, as a stress-dependent critical void ratio and a critical stress cone, according to Matsuoka-Nakai. The results show that hypoplasticity can well predict the mine tailings triaxial test behaviour.
H. R. Manaviparast; T. F. S. Miranda; Gertraud Medicus; Nuno Miguel Cordeiro Cristelo
18th European Conference on Soil Mechanics and Geotechnical Engineering (ECSMGE2024)
C - Risk analysis and safety evaluation
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