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Mechanical Properties of Soft Tailings from different Depths of a Swedish Tailings Dam: Results from Triaxial tests
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering.ORCID iD: 0000-0002-5987-0006
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering.ORCID iD: 0000-0002-3390-3113
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering.ORCID iD: 0000-0002-1365-8552
2018 (English)In: Scientia Iranica. International Journal of Science and Technology, ISSN 1026-3098, E-ISSN 2345-3605, Vol. 25, no 1Article in journal (Refereed) In press
Abstract [en]

Construction of tailings dams is done in stages by raising it layer by layer depending on production rate of a mine. These layered dams may possess different strengths and materials properties in each layer i.e. strength parameters, behavior with loading. Tailings dams may have loose layers in subsequent layers, which upon further loading may be susceptible to stability issues. Identification of material properties and behavior is important to know for safety of dam with further raising and long term perspective modeling. This paper presents the results from drained Triaxial compression tests conducted on samples collected from loose layers, from different vertical depths of a tailings dam. The results indicated that depth did not show much influence on strength parameters determined by drained triaxial tests. The different confining pressures influenced the strain-stress behavior, high confining pressures stress-strain curve showed tendency to formulate straighten line of stress-strain curve, with contractant volume behavior along axial strains. The influence of void ratio on effective stress ratio was observed.

Place, publisher, year, edition, pages
Tehran, 2018. Vol. 25, no 1
Keywords [en]
Shear Strength, Triaxial Tests, Tailings Dams, Mechanical Properties, Tailings
National Category
Engineering and Technology Geotechnical Engineering
Research subject
Soil Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-67133OAI: oai:DiVA.org:ltu-67133DiVA, id: diva2:1169652
Available from: 2017-12-29 Created: 2017-12-29 Last updated: 2018-04-17

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Bhanbhro, RiazKnutsson, RogerEdeskär, TommyKnutsson, Sven
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Scientia Iranica. International Journal of Science and Technology
Engineering and TechnologyGeotechnical Engineering

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