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Numerical Modelling Study of Low-rise Mining at the Tara Mine
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering.
2018 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesisAlternative title
Numerisk modelleringsstudie av brytning av tunna, svagt lutande linser i Tara-gruvan (Swedish)
Abstract [en]

The following report is the results of a master thesis project performed on the behalf of Boliden Tara Mines. The work includes a numerical modelling study with the main purpose to evaluate the room- and pillar stability for the mining method "drift-and-slash" mining currently used in the Tara Mine when mining in thin, low-rise lenses. Also, the potential of applying the "drift-and-fill" mining method was studied during the project. The numerical modelling work was performed both two-dimensionally and three-dimensionally, using the Itasca software FLAC and FLAC3D. 

The study resulted in recommendations regarding the room- and pillar dimensions, mining sequence, rock support, mining method and further studies. It was concluded that the currently used room- and pillar dimensions could be altered to increase the extraction ratio and that the mining sequence and rock support should be determined depending on the room- and pillar dimensions. Also, that it could be possible to change from the drift-and-slash method to the drift-and-fill method from a stability perspective. Lastly, it was recommended to further study the rock strength and to monitor the pillar behaviour.

Place, publisher, year, edition, pages
2018. , p. 131
Keywords [en]
Numerical modelling, drift-and-slash, drift-and-fill, Mining, Boliden, FLAC, FLAC3D
National Category
Civil Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-69624OAI: oai:DiVA.org:ltu-69624DiVA, id: diva2:1220066
External cooperation
Boliden
Subject / course
Student thesis, at least 30 credits
Educational program
Civil Engineering, master's level
Supervisors
Examiners
Available from: 2018-06-19 Created: 2018-06-18 Last updated: 2018-06-19Bibliographically approved

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fulltext(7966 kB)15 downloads
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Suikki, Sara
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CiteExportLink to record
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