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Tracking Deformation Processes at the Legnica Glogow Copper District (Poland) by Satellite InSAR—I: Room and Pillar Mine District
Article

Tracking Deformation Processes at the Legnica Glogow Copper District (Poland) by Satellite InSAR—II: Żelazny Most Tailings Dam

1
Department of Earth Sciences & CERI Research Center on Geological Risks, Sapienza University of Rome, P. le A. Moro 5, 00185 Rome, Italy
2
NHAZCA S.r.l., Via Vittorio Bachelet, 12, 00185 Rome, Italy
3
Department of Civil, Construction-Architectural and Environmental Engineering (DICEAA), University of L’Aquila, Via Giovanni Gronchi, 18, 67100 L’Aquila, Italy
*
Author to whom correspondence should be addressed.
Academic Editors: Eufemia Tarantino, Enrico Borgogno Mondino, Marco Scaioni and Alessandra Capolupo
Land 2021, 10(6), 654; https://doi.org/10.3390/land10060654
Received: 18 May 2021 / Revised: 3 June 2021 / Accepted: 8 June 2021 / Published: 18 June 2021
(This article belongs to the Special Issue Geomatics for Resource Monitoring and Management)
The failures of tailings dams have a major negative impact on the economy, surrounding properties, and people’s lives, and therefore the monitoring of these facilities is crucial to mitigate the risk of failure, but this can be challenging due to their size and inaccessibility. In this work, the deformation processes at Żelazny Most tailings dam (Poland) were analyzed using satellite Ad-vanced Differential SAR Interferometry (A-DInSAR) from October 2014 to April 2019, showing that the dam is affected by both settlements (with a maximum rate of 30 mm/yr), and horizontal sliding in radial direction with respect to the ponds. The load of the tailings is pushing the dam forward along the glacio-tectonic shear planes located at depth, in the Pliocene clays, causing horizontal displacements at a rate up to 30 mm/yr, which could lead to a passive failure of the dam. The measured displacements have been compared with the ones observed by in situ data from the 90s to 2013, available in the literature. The outcomes indicate that intense localized deformations occur in the eastern and northern sectors of the dam, while the western sector is deforming evenly. Moreover, although the horizontal deformation had a slowdown from 2010 until 2013, it continued in 2014 to 2019 with recovered intensity. The upper and the recent embankments are affected by major settlements, possibly due to a lower consolidation degree of the most recent tailings and a larger thickness of compressible materials. View Full-Text
Keywords: A-DInSAR; tailings dam stability; Żelazny Most; remote sensing monitoring; ground deformation A-DInSAR; tailings dam stability; Żelazny Most; remote sensing monitoring; ground deformation
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MDPI and ACS Style

Mazzanti, P.; Antonielli, B.; Sciortino, A.; Scancella, S.; Bozzano, F. Tracking Deformation Processes at the Legnica Glogow Copper District (Poland) by Satellite InSAR—II: Żelazny Most Tailings Dam. Land 2021, 10, 654. https://doi.org/10.3390/land10060654

AMA Style

Mazzanti P, Antonielli B, Sciortino A, Scancella S, Bozzano F. Tracking Deformation Processes at the Legnica Glogow Copper District (Poland) by Satellite InSAR—II: Żelazny Most Tailings Dam. Land. 2021; 10(6):654. https://doi.org/10.3390/land10060654

Chicago/Turabian Style

Mazzanti, Paolo, Benedetta Antonielli, Alessandra Sciortino, Stefano Scancella, and Francesca Bozzano. 2021. "Tracking Deformation Processes at the Legnica Glogow Copper District (Poland) by Satellite InSAR—II: Żelazny Most Tailings Dam" Land 10, no. 6: 654. https://doi.org/10.3390/land10060654

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