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Investigation of important parameters for unreinforced shotcrete as rock support in the Kiirunavaara Mine, Sweden
Kiruna grus och stenförädling AB.
1999 (English)In: Rock mechanics for industry: proceedings of the 37th US Rock Mechanics Symposium, Vail, Colorado, USA, 6-9 June 1999 / [ed] Bernard Amadei, Balkema: Balkema Publishers, A.A. / Taylor & Francis The Netherlands , 1999, Vol. Vol. 2, p. 629-635Conference paper, Published paper (Refereed)
Abstract [en]

The results from an extensive shotcrete failure mapping together with initial adhesion strength tests showed that there were a number of parameters for unreinforced shotcrete as rock support that needed to be further investigated. A more extensive adhesion strength test program was carried out which included studying the effects of accelerator concentration, time and the surface treatment method. The results from these investigations are presented in this paper. It is shown that water-jet scaling and sufficient thickness of the shotcrete give favourable conditions for the use of unreinforced shotcrete as rock support. The result of the tests carried out in Kiirunavaara shows that the adhesion strength has a wide range of variation.

Place, publisher, year, edition, pages
Balkema: Balkema Publishers, A.A. / Taylor & Francis The Netherlands , 1999. Vol. Vol. 2, p. 629-635
National Category
Other Civil Engineering
Research subject
Mining and Rock Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-32486Local ID: 6ffaecc0-93a7-11dd-a897-000ea68e967bISBN: 90-5809-100-7 (print)OAI: oai:DiVA.org:ltu-32486DiVA, id: diva2:1005720
Conference
U.S. Rock Mechanics Symposium : 06/06/1999 - 09/06/1999
Note
Godkänd; 1999; 20081006 (andbra)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-11-25Bibliographically approved

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Malmgren, Lars

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