Time-dependent movements of the hangingwall at the Kiirunavaara mine
The hangingwall deformation behaviour at the Kiirunavaara mine has been characterised after several years of collecting surveying data from the ground surface. The monitoring system was implemented to track surface subsidence because the city of Kiruna and the railway are situated on the hangingwall...
Published in: | International Journal of Mining, Reclamation and Environment |
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Language: | English |
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Luleå tekniska universitet, Geoteknologi
2012
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Online Access: | http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-11986 https://doi.org/10.1080/17480930.2011.552287 |
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ftluleatu:oai:DiVA.org:ltu-11986 2023-05-15T17:04:15+02:00 Time-dependent movements of the hangingwall at the Kiirunavaara mine Villegas, Tomas Nordlund, Erling 2012 application/pdf http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-11986 https://doi.org/10.1080/17480930.2011.552287 eng eng Luleå tekniska universitet, Geoteknologi International Journal of Mining, Reclamation and Environment, 1748-0930, 2012, 26:2, s. 119-133 http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-11986 doi:10.1080/17480930.2011.552287 ISI:000305409400004 Scopus 2-s2.0-84859734550 Local b0ae212f-f70d-45ae-986b-b0b86153fc05 info:eu-repo/semantics/openAccess Other Civil Engineering Annan samhällsbyggnadsteknik Article in journal info:eu-repo/semantics/article text 2012 ftluleatu https://doi.org/10.1080/17480930.2011.552287 2022-10-25T20:54:32Z The hangingwall deformation behaviour at the Kiirunavaara mine has been characterised after several years of collecting surveying data from the ground surface. The monitoring system was implemented to track surface subsidence because the city of Kiruna and the railway are situated on the hangingwall. Data time–displacement and time–velocity curves were used and different stages of deformation behaviour were identified – regressive, progressive and steady state. The movement starts with a regressive behaviour for which subsidence is characterised by continuous deformations. At the end of this stage the movement accelerates, marking the beginning of the progressive behaviour where subsidence becomes more discontinuous. A steady state stage is reached when the strength of the failure surface decreases to the residual value. To predict displacement in the vicinity of the railway, accumulated displacements per year were analysed for several stations for which data for the full regressive stage were available. Displacement tendencies were fitted with quadratic polynomial functions. Therefore, the rate of movement follows a linear trend with a constant acceleration. Finally, a critical horizontal strain limit was determined based on the estimated displacement. Validerad; 2012; 20120129 (tomvil) Article in Journal/Newspaper Kiruna Luleå University of Technology Publications (DiVA) Kiruna International Journal of Mining, Reclamation and Environment 26 2 119 133 |
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Open Polar |
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Luleå University of Technology Publications (DiVA) |
op_collection_id |
ftluleatu |
language |
English |
topic |
Other Civil Engineering Annan samhällsbyggnadsteknik |
spellingShingle |
Other Civil Engineering Annan samhällsbyggnadsteknik Villegas, Tomas Nordlund, Erling Time-dependent movements of the hangingwall at the Kiirunavaara mine |
topic_facet |
Other Civil Engineering Annan samhällsbyggnadsteknik |
description |
The hangingwall deformation behaviour at the Kiirunavaara mine has been characterised after several years of collecting surveying data from the ground surface. The monitoring system was implemented to track surface subsidence because the city of Kiruna and the railway are situated on the hangingwall. Data time–displacement and time–velocity curves were used and different stages of deformation behaviour were identified – regressive, progressive and steady state. The movement starts with a regressive behaviour for which subsidence is characterised by continuous deformations. At the end of this stage the movement accelerates, marking the beginning of the progressive behaviour where subsidence becomes more discontinuous. A steady state stage is reached when the strength of the failure surface decreases to the residual value. To predict displacement in the vicinity of the railway, accumulated displacements per year were analysed for several stations for which data for the full regressive stage were available. Displacement tendencies were fitted with quadratic polynomial functions. Therefore, the rate of movement follows a linear trend with a constant acceleration. Finally, a critical horizontal strain limit was determined based on the estimated displacement. Validerad; 2012; 20120129 (tomvil) |
format |
Article in Journal/Newspaper |
author |
Villegas, Tomas Nordlund, Erling |
author_facet |
Villegas, Tomas Nordlund, Erling |
author_sort |
Villegas, Tomas |
title |
Time-dependent movements of the hangingwall at the Kiirunavaara mine |
title_short |
Time-dependent movements of the hangingwall at the Kiirunavaara mine |
title_full |
Time-dependent movements of the hangingwall at the Kiirunavaara mine |
title_fullStr |
Time-dependent movements of the hangingwall at the Kiirunavaara mine |
title_full_unstemmed |
Time-dependent movements of the hangingwall at the Kiirunavaara mine |
title_sort |
time-dependent movements of the hangingwall at the kiirunavaara mine |
publisher |
Luleå tekniska universitet, Geoteknologi |
publishDate |
2012 |
url |
http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-11986 https://doi.org/10.1080/17480930.2011.552287 |
geographic |
Kiruna |
geographic_facet |
Kiruna |
genre |
Kiruna |
genre_facet |
Kiruna |
op_relation |
International Journal of Mining, Reclamation and Environment, 1748-0930, 2012, 26:2, s. 119-133 http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-11986 doi:10.1080/17480930.2011.552287 ISI:000305409400004 Scopus 2-s2.0-84859734550 Local b0ae212f-f70d-45ae-986b-b0b86153fc05 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1080/17480930.2011.552287 |
container_title |
International Journal of Mining, Reclamation and Environment |
container_volume |
26 |
container_issue |
2 |
container_start_page |
119 |
op_container_end_page |
133 |
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1766058306313388032 |