UPSH; groundwater interaction; hydrochemistry; coal mine; old mine; underground reservoir
Abstract :
[en] 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, especially in coal mine environments were the presence of sulfide minerals is common. For this reason, it is needed to ascertain 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 allow understanding how the hydraulic conductivity and the porosity affect the hydrochemical changes and their associated consequences in this kind of environments.
Disciplines :
Geological, petroleum & mining engineering
Author, co-author :
Pujades, Estanis; UFZ – Helmholtz Centre for Environmental Research, Leipzig, Germany > Department of Computational Hydrosystems
Jurado, Anna; Technische Universität Dresden, Dresden, Germany > Department of Hydrosciences
Orban, Philippe ; Université de Liège - ULiège > Département ArGEnCo > Hydrogéologie & Géologie de l'environnement
Dassargues, Alain ; Université de Liège - ULiège > Département ArGEnCo > Hydrogéologie & Géologie de l'environnement
Language :
English
Title :
Hydrochemical changes induced by underground pumped storage hydropower: influence of aquifer parameters in coal mine environments
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