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Potentiel de valorisation de sites miniers et carriers en step en France et en Belgique

Abstract : Pumped Hydro-Energy Storage (PHES) account for more than 97% of the world's electrical energy storage and cumulate approximately 170 GW of installed capacity. France and Belgium currently have 9 PHES with a total capacity of 6.3 GW, but there are no longer any new sites acceptable for conventional PHES as they require the excavation of two basins on the surface, and can only be installed in areas with a marked relief. Following the foreseeable demand for energy storage generated by the development of intermittent renewable energies, it is proposed to study the possibility of creating new non-conventional PHES using existing basins in abandoned mines or quarries. These may be surface or underground basins, the latter providing access to subterranean or semi-subterranean PHES technology (3S-PHES). This paper describes the potential of these new PHES technologies and the risks and impacts they are likely to generate. These risks concern first of all adjacent aquifers: hydromechanical disturbances (propagation of water level variations in the aquifer) and hydrochemical interactions (precipitation of carbonates and iron oxides). They also concern the ground surface with the possibility of ground movements or surface gas emissions. However, these are risks that have already been identified and controlled in the context of other underground activities.
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Submitted on : Monday, August 9, 2021 - 5:10:42 PM
Last modification on : Tuesday, August 10, 2021 - 3:10:14 AM

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Philippe Gombert, Angelique Poulain, Pascal Goderniaux, Philippe Orban, Estanislao Pujades, et al.. Potentiel de valorisation de sites miniers et carriers en step en France et en Belgique. La Houille Blanche - Revue internationale de l'eau, EDP Sciences, 2020, pp.33-42. ⟨10.1051/lhb/2020035⟩. ⟨ineris-03318330⟩

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