<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>With the occasion of complex and detailed studies, conducted especially from the geotechnical point of view (between 2016 and 2019), on the North Pesteana mining perimeter (more precisely on the lignite open-pit with the same name) numerous areas affected by suffosion were highlighted, mainly located on the lower steps (steps III and IV). Starting from these observations, the present paper analysis the risk of suffosion phenomenon to occur in the case of the final slopes of North Pesteana open-pit. In general, as observed, these areas have small and medium sizes, and do not affect significantly the stability of the steps, being immediately remedied with the advancement of the work front. Also, it was observed that, with the advancement of the excavation fronts, the groundwater currents constantly entrain the fine particles from the aquifer formations, and therefore new such suffosion areas occur. Taking into account the fact that the exploitation of lignite in this perimeter is ending soon, it was considered as necessary to assess the risk of suffosion at the final slopes (long term slopes) in order to be able to identify appropriate measures to prevent future potential catastrophic events.</p>
</abstract>

With the occasion of complex and detailed studies, conducted especially from the geotechnical point of view (between 2016 and 2019), on the North Pesteana mining perimeter (more precisely on the lignite open-pit with the same name) numerous areas affected by suffosion were highlighted, mainly located on the lower steps (steps III and IV). Starting from these observations, the present paper analysis the risk of suffosion phenomenon to occur in the case of the final slopes of North Pesteana open-pit. In general, as observed, these areas have small and medium sizes, and do not affect significantly the stability of the steps, being immediately remedied with the advancement of the work front. Also, it was observed that, with the advancement of the excavation fronts, the groundwater currents constantly entrain the fine particles from the aquifer formations, and therefore new such suffosion areas occur. Taking into account the fact that the exploitation of lignite in this perimeter is ending soon, it was considered as necessary to assess the risk of suffosion at the final slopes (long term slopes) in order to be able to identify appropriate measures to prevent future potential catastrophic events.

Assessing the Suffosion Risk for the Final in-Situ Slopes of the North Peşteana Open-Pit

Faculty of Mining, Department of Environmental Engineering and Geology

Mining Revue

This work is licensed under the Creative Commons Attribution-ShareAlike 4.0 International License.

With the occasion of complex and detailed studies, conducted especially from the geotechnical point of view (between 2016 and 2019), on the North Pesteana...

Assessing the Suffosion Risk for the Final in-Situ Slopes of the North Peşteana Open-Pit

Publié en ligne: 13 avr. 2021

Pages: 24 - 33

DOI: https://doi.org/10.2478/minrv-2021-0003

Mots clés
suffosion, risk assessment, open-pits, in-situ slopes

© 2021 Izabela-Maria Apostu et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-ShareAlike 4.0 International License.

Assessing the Suffosion Risk for the Final in-Situ Slopes of the North Peşteana Open-Pit

Publié en ligne: 13 avr. 2021

Pages: 24 - 33

DOI: https://doi.org/10.2478/minrv-2021-0003

Mots cléssuffosion, risk assessment, open-pits, in-situ slopes

© 2021 Izabela-Maria Apostu et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-ShareAlike 4.0 International License.

Mots clés
suffosion, risk assessment, open-pits, in-situ slopes