Monitoring internal erosion in embankment dams using 3D Electrical Resistivity Tomography: Älvkarleby test embankment dam
Norooz, Reyhaneh LU ; Dahlin, Torleif LU ; Olsson, Per-Ivar LU
; Nivorlis, Aristeidis
LU
; Günther, Thomas
and Bernstone, Christian
LU
(2023)
Near Surface Geoscience 2023
- Abstract
- One major risk threatening embankment dam integrity is internal erosion of the core. Internal erosion progresses inside the dam but it is difficult to detect with conventional methods. Electrical Resistivity Tomography (ERT) is a potential-based method that can sense the interior of the dam, and this study aims to evaluate the capability of ERT as a complementary monitoring technique for discovering internal erosion. A test embankment dam with some defects incorporated inside the core and fine filter in Älvkareby, Sweden, has been constructed with the purpose of assessing different monitoring techniques including ERT. Buried electrodes and sensors for other monitoring instruments were placed inside the dam. The collected ERT data were... (More)
- One major risk threatening embankment dam integrity is internal erosion of the core. Internal erosion progresses inside the dam but it is difficult to detect with conventional methods. Electrical Resistivity Tomography (ERT) is a potential-based method that can sense the interior of the dam, and this study aims to evaluate the capability of ERT as a complementary monitoring technique for discovering internal erosion. A test embankment dam with some defects incorporated inside the core and fine filter in Älvkareby, Sweden, has been constructed with the purpose of assessing different monitoring techniques including ERT. Buried electrodes and sensors for other monitoring instruments were placed inside the dam. The collected ERT data were inverted using a 3D time-lapse inversion model implemented in pyGIMLI/pyBERT package. The results revealed a layered resistivity structure in the core and several unintentional anomalous zones. Furthermore 2 out of 5 defects in the core were located, namely horizontal and vertical crushed rock zones, with a slight location shift for the horizontal zone. A concrete block defect was indicated, although not as distinctly and with a lateral shift. The two remaining defects, a crushed rock zone at the abutment and a wooden block were not discovered. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/fe32dbd7-c73d-4131-a516-a76eb7061d52
- author
- Norooz, Reyhaneh
LU
; Dahlin, Torleif
LU
; Olsson, Per-Ivar
LU
; Nivorlis, Aristeidis
LU
; Günther, Thomas
and Bernstone, Christian
LU
- organization
- publishing date
- 2023-08
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- host publication
- Procs. Near Surface Geoscience 2023
- article number
- 112
- pages
- 5 pages
- conference name
- Near Surface Geoscience 2023
- conference location
- Edinburgh, United Kingdom
- conference dates
- 2023-09-03 - 2023-09-07
- external identifiers
-
- scopus:85182934316
- DOI
- 10.3997/2214-4609.202320112
- project
- Detection of internal defects in embankment dams by geoelectrical tomography monitoring
- Integrating electrical resistivity results interpretation with numerical flow modelling for detection of internal defects in embankment dams
- language
- English
- LU publication?
- yes
- id
- fe32dbd7-c73d-4131-a516-a76eb7061d52
- date added to LUP
- 2023-09-15 11:42:52
- date last changed
- 2024-02-15 14:38:36
@inproceedings{fe32dbd7-c73d-4131-a516-a76eb7061d52,
abstract = {{One major risk threatening embankment dam integrity is internal erosion of the core. Internal erosion progresses inside the dam but it is difficult to detect with conventional methods. Electrical Resistivity Tomography (ERT) is a potential-based method that can sense the interior of the dam, and this study aims to evaluate the capability of ERT as a complementary monitoring technique for discovering internal erosion. A test embankment dam with some defects incorporated inside the core and fine filter in Älvkareby, Sweden, has been constructed with the purpose of assessing different monitoring techniques including ERT. Buried electrodes and sensors for other monitoring instruments were placed inside the dam. The collected ERT data were inverted using a 3D time-lapse inversion model implemented in pyGIMLI/pyBERT package. The results revealed a layered resistivity structure in the core and several unintentional anomalous zones. Furthermore 2 out of 5 defects in the core were located, namely horizontal and vertical crushed rock zones, with a slight location shift for the horizontal zone. A concrete block defect was indicated, although not as distinctly and with a lateral shift. The two remaining defects, a crushed rock zone at the abutment and a wooden block were not discovered.}},
author = {{Norooz, Reyhaneh and Dahlin, Torleif and Olsson, Per-Ivar and Nivorlis, Aristeidis and Günther, Thomas and Bernstone, Christian}},
booktitle = {{Procs. Near Surface Geoscience 2023}},
language = {{eng}},
title = {{Monitoring internal erosion in embankment dams using 3D Electrical Resistivity Tomography: Älvkarleby test embankment dam}},
url = {{http://dx.doi.org/10.3997/2214-4609.202320112}},
doi = {{10.3997/2214-4609.202320112}},
year = {{2023}},
}