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3D Numerical Modelling of a Wedge in a Drift at the Kiirunavaara Mine
Boliden Mines Technology.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering.
2015 (English)In: The Electronic journal of geotechnical engineering, ISSN 1089-3032, E-ISSN 1089-3032, Vol. 20, no 22, 12309-12328 p., Paper 2015-0999Article in journal (Refereed) Published
Abstract [en]

historic case is a field study of the mechanics of grouted rockbolts conducted in the Kiirunavaara mine between 1980 and 1983. In the drift the movement of the rock mass was recorded near the wedge, but the detailed behaviour of the wedge was not studied in the historic case. In the present work, the behaviour of the wedge is studied using field deformation measurement data and numerical analysis. The study was aimed at improving the understanding of wedge instability and associated deformations. The study shows that the behaviour of the wedge can successfully be described through evaluation of data obtained from field deformation measurement and numerical analysis. It was found that slip (shear strength reached) developed along the pre-existing joints defining the wedge. Shear deformations were thus non-elastic, but very small, and the wedge remained stable (no fallout).

Place, publisher, year, edition, pages
2015. Vol. 20, no 22, 12309-12328 p., Paper 2015-0999
Keyword [en]
drift monitoring, wedge failure, field measurement, numerical analysis, deformation, extensometer, sliding, slip, Civil engineering and architecture - Geoengineering and mining engineering
Keyword [sv]
Samhällsbyggnadsteknik och arkitektur - Geoteknik och gruvteknik
Research subject
Mining and Rock Engineering
URN: urn:nbn:se:ltu:diva-12016Local ID: b12400f3-0b1a-48ff-9c82-1c28a6695f2cOAI: diva2:984966
Validerad; 2015; Nivå 1; 20151117 (erlnor)Available from: 2016-09-29 Created: 2016-09-29Bibliographically approved

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