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Mollehuara Canales, R., Kozlovskaya, E., Lunkka, J. P., Guan, H., Banks, E., & Moisio, K. (2020). Geoelectric interpretation of petrophysical and hydrogeological parameters in reclaimed mine tailings areas. Journal of Applied Geophysics, 181, 104139. https://doi.org/10.1016/j.jappgeo.2020.104139

Geoelectric interpretation of petrophysical and hydrogeological parameters in reclaimed mine tailings areas

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Author: Mollehuara Canales, R.1; Kozlovskaya, E.1; Lunkka, J.P.1;
Organizations: 1Oulu Mining School, University of Oulu, Oulu 90570, Finland
2National Centre for Groundwater Research and Training, College of Science and Engineering, Flinders University, Adelaide, SA 5042, Australia
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 2.2 MB)
Persistent link: http://urn.fi/urn:nbn:fi-fe2020090267249
Language: English
Published: Elsevier, 2020
Publish Date: 2020-09-02
Description:

Abstract

The research applies non-invasive electrical resistivity imaging (ERI) for the quantitative interpretation of electric and hydrogeological parameters in a reclaimed tailings area. Composition, porous structure and clay content do not change significantly in the tailings matrix but have influence in bulk electrical resistivity. Therefore, the tailings matrix was included in a multiphase approach known as generalized Archie‘s equation and modelled for interpretation of bulk electrical resistivity, water content and saturation in the vadose zone of the waste deposit. The results are consistent to explain the sensitivity of electrical resistivity to tailings hydrogeological parameters.

The model provides a reliable approximation of the distribution of water content and saturation in the vadose zone and describes quantitatively for the first time the role of the tailings matrix as contributor of the electrical response. It also confirms that pore-water of ionic composition and saturation are the controlling factors for the variability of the bulk electrical resistivity.

The method described in the paper is beneficial for predicting electrical and hydraulic parameters in tailings facilities, which is important for monitoring the integrity of these structures into the future.

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Series: Journal of applied geophysics
ISSN: 0926-9851
ISSN-E: 1879-1859
ISSN-L: 0926-9851
Volume: 181
Article number: 104139
DOI: 10.1016/j.jappgeo.2020.104139
OADOI: https://oadoi.org/10.1016/j.jappgeo.2020.104139
Type of Publication: A1 Journal article – refereed
Field of Science: 1171 Geosciences
Subjects:
Electrical resistivity imaging
Hydrogeophysics
Mine closure
Mining waste
Monitoring
Tailings
Article
Funding: This project was supported by the European Union's Horizon 2020 research and innovation programme under the Marie Skoldowska-Curie grant agreement No 713606. The research work was funded by the K.H. Renlund Foundation and carried out at Oulu Mining School Finland and at the National Centre for Groundwater Research and Training, Flinders University, Australia.
EU Grant Number: (713606) I4FUTURE - Novel Imaging and Characterisation Methods in Bio, Medical, and Environmental Research and Technology Innovations
Dataset Reference: Datasets related to this article can be found at an open-source online data repository hosted at Mendeley Data:
  http://dx.doi.org/10.17632/jdr7yj39d2.1
Copyright information: © 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
  https://creativecommons.org/licenses/by-nc-nd/4.0/