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Open-Pit Mine Dewatering Based on Water Recirculation—Case Study with Numerical Modelling

Author

Listed:
  • Kazimierz Różkowski

    (Faculty of Civil Engineering and Resource Management, AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Krakow, Poland)

  • Robert Zdechlik

    (Faculty of Geology, Geophysics and Environmental Protection, AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Krakow, Poland)

  • Wojciech Chudzik

    (Lafarge Aggregates and Concrete, Aleje Jerozolimskie 142B, 02-305 Warsaw, Poland)

Abstract

The layout of the dewatering system in open-cast mining must be adapted to mining assumptions and to the size of expected inflows, which, in turn, depend on natural conditions and the operation of other mines and groundwater intakes, affecting the arrangement of the hydrodynamic field. This case study analyses possible dewatering solutions related to a change in the mining drainage system: decommissioning by flooding of a depleted deposit and dewatering of a new one located in the vicinity. As part of numerical modelling, a solution was sought to minimise the environmental impact of drainage. Forecast calculations for two drainage alternatives were made. One of the solutions follows the classic approach: independent dewatering of the new excavation. The second solution assumes the recirculation of waters from dewatering of the new mine through their discharge into a closed and flooded pit located in the vicinity. The results of the forecasts for both variants point to the modification of the hydrodynamic field resulting from expected volumes of inflows and different environmental effects. The use of numerical simulations assisted the selection of the optimal dewatering solution.

Suggested Citation

  • Kazimierz Różkowski & Robert Zdechlik & Wojciech Chudzik, 2021. "Open-Pit Mine Dewatering Based on Water Recirculation—Case Study with Numerical Modelling," Energies, MDPI, vol. 14(15), pages 1-18, July.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:15:p:4576-:d:603524
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    Citations

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    Cited by:

    1. Robert Zdechlik & Kazimierz Różkowski & Mariusz Śledzik, 2022. "Influence of Long-Term Mine Activity on Hydraulic Relations between Separate Hydrogeological Units—New Aspects of Regional Water Circulation Assessment," Energies, MDPI, vol. 15(13), pages 1-23, June.

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