Poster (Scientific congresses and symposiums)
Open pits or deep mines used for Underground Pumped Storage Hydroelectricity (UPSH): impacts on groundwater exchanges
Pujades, Estanislao; Willems, Thibault; Orban, Philippe et al.
2015Early Career Hydrogeologists’ Conference 2015
 

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Keywords :
UPSH; Hydroelectricity; Energy Storage; Mine
Abstract :
[en] UPSH using abandoned works is an attractive alternative to improve the efficiency of power plants, which cannot regulate the amount of electricity generated according to the demand (wind, solar or nuclear). UPSH plants can store (pumping water from an underground to an upper reservoir) or produce energy (releasing water from an upper to an underground reservoir) during the low or high demand periods. However, it is mandatory to determine 1) the impacts caused on aquifers and 2) the role played by the aquifer characteristics in order to assess the suitability of UPSH plants. Numerical simulations are developed in order to ascertain the groundwater flow impacts and the variables involved in the process. Given the earlier stages of our study, results are obtained considering regular pumping-injection cycles and simplifying the shape of the mine/open pit. The most noticeable effect consists in an oscillation of the groundwater. The hydraulic head around which groundwater oscillates, the magnitude of the oscillations and the time to achieve a pseudo-steady state (magnitude and head reached during oscillations do not vary anymore with time) depend on the boundaries, the parameters of the aquifer and the characteristics of the underground reservoir.
Research center :
Hydrogeology & Environmental Geology
Disciplines :
Geological, petroleum & mining engineering
Author, co-author :
Pujades, Estanislao ;  Université de Liège > Département ArGEnCo > Hydrogéologie & Géologie de l'environnement
Willems, Thibault ;  Université de Liège > Département ArGEnCo > Hydrogéologie & Géologie de l'environnement
Orban, Philippe  ;  Université de Liège > Département ArGEnCo > Hydrogéologie & Géologie de l'environnement
Dassargues, Alain  ;  Université de Liège > Département ArGEnCo > Hydrogéologie & Géologie de l'environnement
Language :
English
Title :
Open pits or deep mines used for Underground Pumped Storage Hydroelectricity (UPSH): impacts on groundwater exchanges
Publication date :
08 July 2015
Event name :
Early Career Hydrogeologists’ Conference 2015
Event organizer :
The Hydrogeological Group of the Geological Society, the British National Chapter of IAH and the IAH Early Career Hydrogeologists' Network
Event place :
Newcastle, United Kingdom
Event date :
from 08-07-2015 to 09-07-2015
Audience :
International
Funders :
University of Liège and the EU through the Marie Curie BeIPD-COFUND postdoctoral fellowship programme (2014-2016) and SMARTWATER project financed by the Walloon Region SPW-DGO6
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since 21 September 2015

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