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Using the resistivity method for leakage detection in a blind test at the Rossvatn embankment dam test facility in Norway

Sjodahl, P.; Dahlin, Torleif LU and Johansson, S. (2010) In Bulletin of Engineering Geology and the Environment 69(4). p.643-658
Abstract
Internal erosion is a cause of embankment dam failure, thus it is important to develop methods for seepage monitoring and internal erosion detection. In order to evaluate the potential of resistivity monitoring to give an early warning of such leakage/erosion, a test was undertaken on a rockfill embankment dam with a central glacial till core at the Rossvatn test facility in Norway. Three defects, consisting of permeable material, were built into the dam at various depths and locations unknown to the personnel carrying out the measurements and data interpretation. A numerical modelling pre-study was carried out, showing that all the actually constructed defects were too small to be detected by single time investigation. In the final test,... (More)
Internal erosion is a cause of embankment dam failure, thus it is important to develop methods for seepage monitoring and internal erosion detection. In order to evaluate the potential of resistivity monitoring to give an early warning of such leakage/erosion, a test was undertaken on a rockfill embankment dam with a central glacial till core at the Rossvatn test facility in Norway. Three defects, consisting of permeable material, were built into the dam at various depths and locations unknown to the personnel carrying out the measurements and data interpretation. A numerical modelling pre-study was carried out, showing that all the actually constructed defects were too small to be detected by single time investigation. In the final test, repeated measurements were undertaken with different reservoir levels, i.e. a limited monitoring approach. This increased the detection capability, confirming the value of the geophysical approach and that monitoring is superior to single time investigations. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Internal erosion, Embankment dam, Resistivity, Modelling, Leakage, Seepage detection
in
Bulletin of Engineering Geology and the Environment
volume
69
issue
4
pages
643 - 658
publisher
Springer
external identifiers
  • wos:000282824700014
  • scopus:77958018642
ISSN
1435-9537
DOI
10.1007/s10064-010-0314-y
language
English
LU publication?
yes
id
7d54b6d8-96a4-4b01-9c0c-ae2d6fa2e6df (old id 1726184)
date added to LUP
2010-12-03 15:52:56
date last changed
2018-05-29 09:38:52
@article{7d54b6d8-96a4-4b01-9c0c-ae2d6fa2e6df,
  abstract     = {Internal erosion is a cause of embankment dam failure, thus it is important to develop methods for seepage monitoring and internal erosion detection. In order to evaluate the potential of resistivity monitoring to give an early warning of such leakage/erosion, a test was undertaken on a rockfill embankment dam with a central glacial till core at the Rossvatn test facility in Norway. Three defects, consisting of permeable material, were built into the dam at various depths and locations unknown to the personnel carrying out the measurements and data interpretation. A numerical modelling pre-study was carried out, showing that all the actually constructed defects were too small to be detected by single time investigation. In the final test, repeated measurements were undertaken with different reservoir levels, i.e. a limited monitoring approach. This increased the detection capability, confirming the value of the geophysical approach and that monitoring is superior to single time investigations.},
  author       = {Sjodahl, P. and Dahlin, Torleif and Johansson, S.},
  issn         = {1435-9537},
  keyword      = {Internal erosion,Embankment dam,Resistivity,Modelling,Leakage,Seepage detection},
  language     = {eng},
  number       = {4},
  pages        = {643--658},
  publisher    = {Springer},
  series       = {Bulletin of Engineering Geology and the Environment},
  title        = {Using the resistivity method for leakage detection in a blind test at the Rossvatn embankment dam test facility in Norway},
  url          = {http://dx.doi.org/10.1007/s10064-010-0314-y},
  volume       = {69},
  year         = {2010},
}