Numerical Analyses of Earthquake Induced Liquefaction and Deformation Behaviour of an Upstream Tailings Dam
Much of the seismic activity of northern Sweden consists of micro-earthquakes occurring near postglacial faults. However, larger magnitude earthquakes do occur in Sweden, and earthquake statistics indicate that a magnitude 5 event is likely to occur once every century. This paper presents dynamic an...
Published in: | Advances in Materials Science and Engineering |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Advances in Materials Science and Engineering
2017
|
Subjects: | |
Online Access: | https://doi.org/10.1155/2017/5389308 |
id |
fthindawi:oai:hindawi.com:10.1155/2017/5389308 |
---|---|
record_format |
openpolar |
spelling |
fthindawi:oai:hindawi.com:10.1155/2017/5389308 2023-05-15T17:44:24+02:00 Numerical Analyses of Earthquake Induced Liquefaction and Deformation Behaviour of an Upstream Tailings Dam Muhammad Auchar Zardari Hans Mattsson Sven Knutsson Muhammad Shehzad Khalid Maria V. S. Ask Björn Lund 2017 https://doi.org/10.1155/2017/5389308 en eng Advances in Materials Science and Engineering https://doi.org/10.1155/2017/5389308 Copyright © 2017 Muhammad Auchar Zardari et al. Research Article 2017 fthindawi https://doi.org/10.1155/2017/5389308 2019-05-26T08:10:26Z Much of the seismic activity of northern Sweden consists of micro-earthquakes occurring near postglacial faults. However, larger magnitude earthquakes do occur in Sweden, and earthquake statistics indicate that a magnitude 5 event is likely to occur once every century. This paper presents dynamic analyses of the effects of larger earthquakes on an upstream tailings dam at the Aitik copper mine in northern Sweden. The analyses were performed to evaluate the potential for liquefaction and to assess stability of the dam under two specific earthquakes: a commonly occurring magnitude 3.6 event and a more extreme earthquake of magnitude 5.8. The dynamic analyses were carried out with the finite element program PLAXIS using a recently implemented constitutive model called UBCSAND. The results indicate that the magnitude 5.8 earthquake would likely induce liquefaction in a limited zone located below the ground surface near the embankment dikes. It is interpreted that stability of the dam may not be affected due to the limited extent of the liquefied zone. Both types of earthquakes are predicted to induce tolerable magnitudes of displacements. The results of the postseismic slope stability analysis, performed for a state after a seismic event, suggest that the dam is stable during both the earthquakes. Article in Journal/Newspaper Northern Sweden Hindawi Publishing Corporation Copper Mine ENVELOPE(-59.667,-59.667,-62.383,-62.383) Advances in Materials Science and Engineering 2017 1 12 |
institution |
Open Polar |
collection |
Hindawi Publishing Corporation |
op_collection_id |
fthindawi |
language |
English |
description |
Much of the seismic activity of northern Sweden consists of micro-earthquakes occurring near postglacial faults. However, larger magnitude earthquakes do occur in Sweden, and earthquake statistics indicate that a magnitude 5 event is likely to occur once every century. This paper presents dynamic analyses of the effects of larger earthquakes on an upstream tailings dam at the Aitik copper mine in northern Sweden. The analyses were performed to evaluate the potential for liquefaction and to assess stability of the dam under two specific earthquakes: a commonly occurring magnitude 3.6 event and a more extreme earthquake of magnitude 5.8. The dynamic analyses were carried out with the finite element program PLAXIS using a recently implemented constitutive model called UBCSAND. The results indicate that the magnitude 5.8 earthquake would likely induce liquefaction in a limited zone located below the ground surface near the embankment dikes. It is interpreted that stability of the dam may not be affected due to the limited extent of the liquefied zone. Both types of earthquakes are predicted to induce tolerable magnitudes of displacements. The results of the postseismic slope stability analysis, performed for a state after a seismic event, suggest that the dam is stable during both the earthquakes. |
format |
Article in Journal/Newspaper |
author |
Muhammad Auchar Zardari Hans Mattsson Sven Knutsson Muhammad Shehzad Khalid Maria V. S. Ask Björn Lund |
spellingShingle |
Muhammad Auchar Zardari Hans Mattsson Sven Knutsson Muhammad Shehzad Khalid Maria V. S. Ask Björn Lund Numerical Analyses of Earthquake Induced Liquefaction and Deformation Behaviour of an Upstream Tailings Dam |
author_facet |
Muhammad Auchar Zardari Hans Mattsson Sven Knutsson Muhammad Shehzad Khalid Maria V. S. Ask Björn Lund |
author_sort |
Muhammad Auchar Zardari |
title |
Numerical Analyses of Earthquake Induced Liquefaction and Deformation Behaviour of an Upstream Tailings Dam |
title_short |
Numerical Analyses of Earthquake Induced Liquefaction and Deformation Behaviour of an Upstream Tailings Dam |
title_full |
Numerical Analyses of Earthquake Induced Liquefaction and Deformation Behaviour of an Upstream Tailings Dam |
title_fullStr |
Numerical Analyses of Earthquake Induced Liquefaction and Deformation Behaviour of an Upstream Tailings Dam |
title_full_unstemmed |
Numerical Analyses of Earthquake Induced Liquefaction and Deformation Behaviour of an Upstream Tailings Dam |
title_sort |
numerical analyses of earthquake induced liquefaction and deformation behaviour of an upstream tailings dam |
publisher |
Advances in Materials Science and Engineering |
publishDate |
2017 |
url |
https://doi.org/10.1155/2017/5389308 |
long_lat |
ENVELOPE(-59.667,-59.667,-62.383,-62.383) |
geographic |
Copper Mine |
geographic_facet |
Copper Mine |
genre |
Northern Sweden |
genre_facet |
Northern Sweden |
op_relation |
https://doi.org/10.1155/2017/5389308 |
op_rights |
Copyright © 2017 Muhammad Auchar Zardari et al. |
op_doi |
https://doi.org/10.1155/2017/5389308 |
container_title |
Advances in Materials Science and Engineering |
container_volume |
2017 |
container_start_page |
1 |
op_container_end_page |
12 |
_version_ |
1766146621566877696 |