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Effect of increased vertical stress on the state of grains in tailings
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering. Luleå University of Technology, Sweden. (Soil Mechanics)
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering. Luleå University of Technology, Sweden. (Soil Mechanics)ORCID iD: 0009-0008-3619-4851
Luleå University of Technology, Sweden. (Applied Geochemistry)
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering. Luleå University of Technology, Sweden. (Soil Mechanics)ORCID iD: 0000-0003-1672-6159
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(English)Manuscript (preprint) (Other academic)
Abstract [en]

The mining industry has experienced rapid growth, leading to the accumulation of substantial mine waste, commonly referred to as tailings. Tailings are typically stored in tailings storage facilities, conventionally consisting of an impoundment surrounded by tailings dams. The construction of tailings dams can involve various methods, with the upstream method being commonly used in the industry. It is crucial to comprehend the long-term mechanical and geochemical behavior of deposited tailings to ensure the safety of upstream constructed tailings dams. The mineral composition, particle size distribution, and particle shape all affect the susceptibility to particle breakage or physical alternation. Therefore, there is an interest in understanding how grain size and grain shape relate to mineral composition and potential particle breakage to ensure the understanding of the long-term mechanical behavior. This study focuses on characterizing deposited tailings from various depths and investigates the impact of increased vertical stress on tailings, particularly examining the potential for crushing effects. The findings highlight the importance of considering these factors for a comprehensive understanding of tailings behavior and their implications for the long-term safety of tailings dams.

Keywords [en]
Tailings, Mineralogy, Particle size distribution, Particle shape
National Category
Geotechnical Engineering Mineral and Mine Engineering
Research subject
Soil Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-105408OAI: oai:DiVA.org:ltu-105408DiVA, id: diva2:1856806
Available from: 2024-05-08 Created: 2024-05-08 Last updated: 2024-05-08
In thesis
1. On Cone Penetration Tests in Tailings: The need for a calibration chamber
Open this publication in new window or tab >>On Cone Penetration Tests in Tailings: The need for a calibration chamber
2024 (English)Licentiate thesis, comprehensive summary (Other academic)
Place, publisher, year, edition, pages
Luleå: Luleå University of Technology, 2024
Series
Licentiate thesis / Luleå University of Technology, ISSN 1402-1757
Keywords
Tailings, Cone Penetration Test, Calibration chamber
National Category
Geotechnical Engineering
Research subject
Soil Mechanics
Identifiers
urn:nbn:se:ltu:diva-105409 (URN)978-91-8048-570-8 (ISBN)978-91-8048-571-5 (ISBN)
Presentation
2024-09-10, E632, Luleå University of Technology, Luleå, 10:00 (Swedish)
Supervisors
Available from: 2024-05-08 Created: 2024-05-08 Last updated: 2024-05-08Bibliographically approved

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Wiklund, ViktorKnutsson, RogerLaue, Jan

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