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Numerical study of the mechanical behaviour of the damaged rock mass around an underground excavation
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering.ORCID iD: 0000-0002-9766-0106
2008 (English)In: MassMin 2008: Proceedings of the 5th International Conference and Exhibition on Mass Mining, Lulea, Sweden 9-11 June 2008 / [ed] Håkan Schunnesson; Erling Nordlund, Luleå: Luleå tekniska universitet, 2008, p. 803-813Conference paper, Published paper (Refereed)
Abstract [en]

The behaviour of the rockmass immediately surrounding an excavation (e.g. open pit slope, underground mine drift, etc.) will ultimately determine the overall performance of the excavation itself and the general operational safety, as well as providing the basis for support requirement decisions. Very often the near-field rockmass is significantly disturbed or damaged by blasting and redistribution of stresses. Any damage or disturbance to the near-field host rock will result in reduction to the strength and stiffness of the rockmass and consequently affect the stability of the excavation. In this paper a series of numerical analyses was conducted to study the behaviour of the near-field host rock, with a damaged rock zone around the excavation boundary. Typical underground mining drift geometry was used in building the models. The in-situ rockmass parameters are those typically encountered in the Swedish hard rockmass system, including the in-situ stresses. The results show that, the stability parameters; induced stresses and ground deformation, were observably affected by the presence of the damaged rock zone, as expected.

Place, publisher, year, edition, pages
Luleå: Luleå tekniska universitet, 2008. p. 803-813
Keywords [en]
Civil engineering and architecture - Geoengineering and mining engineering
Keywords [sv]
Samhällsbyggnadsteknik och arkitektur - Geoteknik och gruvteknik
National Category
Other Civil Engineering
Research subject
Mining and Rock Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-34635Local ID: 8e4490c0-e93c-11dc-9092-000ea68e967bISBN: 978-91-633-2331-7 (print)OAI: oai:DiVA.org:ltu-34635DiVA, id: diva2:1007886
Conference
International Conference & Exhibition on Mass Mining : 09/06/2008 - 11/06/2008
Note
Godkänd; 2008; 20080303 (davsai)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2018-04-16Bibliographically approved

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Saiang, DavidNordlund, Erling

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CiteExportLink to record
Permanent link

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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
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  • asciidoc
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