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Advances in Geosciences An open-access journal for refereed proceedings and special publications
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Volume 45 | Copyright
Adv. Geosci., 45, 45-49, 2018
https://doi.org/10.5194/adgeo-45-45-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

  26 Jul 2018

26 Jul 2018

Hydrochemical changes induced by underground pumped storage hydropower: influence of aquifer parameters in coal mine environments

Estanislao Pujades1, Anna Jurado2, Philippe Orban3, and Alain Dassargues3 Estanislao Pujades et al.
  • 1Department of Computational Hydrosystems, UFZ – Helmholtz Centre for Environmental Research, Permoserstr. 15, 04318 Leipzig, Germany
  • 2Institute for Groundwater Management, Technische Universität Dresden, 01062 Dresden, Germany
  • 3Hydrogeology and Environmental Geology, Urban & Environmental Eng., University of Liege, 4000 Liege, Belgium

Abstract. Underground pumped storage hydropower (UPSH) induces hydrochemical changes when water evolves to reach equilibrium with the atmosphere (in the surface reservoir) and with the surrounding medium (in the underground reservoir). These hydrochemical changes may impact the environment and the efficiency of the system (i.e., the UPSH plant), especially in coal mine environments where the presence of sulphide minerals is common. For this reason, it is needed to assess the variables that control the behavior of the system in order to establish criteria for the selection of abandoned mines to be used as underground reservoirs in future UPSH plants.

Coupled hydro-chemical numerical models are used for investigating the influence of hydraulic parameters on the hydrochemical changes when pyrite is present in the surrounding medium. Results show the role of the hydraulic conductivity and the porosity on the system behavior, which is helpful for selecting those abandoned mines where the hydrochemical changes and their associated consequences will be less.

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Underground pumped storage hydropower (UPSH) induces hydrochemical changes that may impact the environment and the efficiency of the system, especially if pyrite is present. This works assess the role of the hydraulic conductivity and the porosity on the system behavior by means of coupled hydro-chemical numerical models. This is helpful for selecting the most adequate abandoned mines for constructing UPSH plants.
Underground pumped storage hydropower (UPSH) induces hydrochemical changes that may impact the...
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