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The load-bearing process of fully coupled rock bolts
Luleå tekniska universitet.
2000 (English)In: MassMin 2000: 29 October - 2 November 2000, Brisbane, Queensland, Carlton, Victoria: The Australian Institute of Mining and Metallurgy , 2000, p. 933-935Conference paper, Published paper (Refereed)
Abstract [en]

The paper focuses on how rock bolts are loaded in different rock masses, as well as in pullout tests. Three analytical models for rock bolts are presented in brief, one for bolts in continusly deformed rock masses, one for bolts in blocky rock masses, and one for bolts in pullout tests. The bolt models are used to interpret measurement data for rock bolts from three sources and to help specify the modes of axial load in the rock bolts. It is found that in continuously deformed rock formations fully coupled rock bolts have only one axial stress peak. The position of the axial stress peak moves towards the far end of the bolts with increasing rock deformation. In blocky rock masses several axial stress peaks may appear in the rock bolt. The position of this kind of axial stress peak does not change during the entire loading process. For rock bolts in pullout tests, decoupling of the interface always occurs first at the loading point. The decoupling front moves towards the far end of the bolt with an increase in the applied pull load.

Place, publisher, year, edition, pages
Carlton, Victoria: The Australian Institute of Mining and Metallurgy , 2000. p. 933-935
Series
Publication series / Australasian Institute of Mining and Metallurgy ; 2000:7
National Category
Other Civil Engineering
Research subject
Mining and Rock Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-30943Scopus ID: 34588979Local ID: 4f538c80-fce8-11dc-a946-000ea68e967bISBN: 1-87577-679-6 (print)OAI: oai:DiVA.org:ltu-30943DiVA, id: diva2:1004172
Conference
International Conference & Exhibition on Mass Mining : 29/10/2000 - 02/11/2000
Note
Godkänd; 2000; 20080328 (cira)Available from: 2016-09-30 Created: 2016-09-30Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
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  • vancouver
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More styles
Language
  • de-DE
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  • en-US
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  • nn-NO
  • nn-NB
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