Deterministic modelling of the cumulative impacts of underground structures on urban groundwater flow and the definition of a potential state of urban groundwater flow: example of Lyon, France - IRSTEA - Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (<b>anciennement Cemagref</b>) Access content directly
Journal Articles Hydrogeology Journal Year : 2016

Deterministic modelling of the cumulative impacts of underground structures on urban groundwater flow and the definition of a potential state of urban groundwater flow: example of Lyon, France

Abstract

Underground structures have been shown to have a great influence on subsoil resources in urban aquifers. A methodology to assess the actual and the potential state of the groundwater flow in an urban area is proposed. The study develops a three-dimensional modeling approach to understand the cumulative impacts of underground infrastructures on urban groundwater flow, using a case in the city of Lyon (France). All known underground structures were integrated in the numerical model. Several simulations were run: the actual state of groundwater flow, the potential state of ground- water flow (without underground structures), an intermediate state (without impervious structures), and a transient simulation of the actual state of groundwater flow. The results show that underground structures fragment groundwater flow systems leading to a modification of the aquifer regime. For the case studied, the flow systems are shown to be stable over time with a transient simulation. Structures with drainage sys- tems are shown to have a major impact on flow systems. The barrier effect of impervious structures was negligible because of the small hydraulic gradient of the area. The study demon- strates that the definition of a potential urban groundwater flow and the depiction of urban flow systems, which involves understanding the impact of underground structures, are im- portant issues with respect to urban underground planning.
Fichier principal
Vignette du fichier
attard2016.pdf (967.16 Ko) Télécharger le fichier
Origin Files produced by the author(s)

Dates and versions

hal-01369493 , version 1 (20-06-2024)

Identifiers

Cite

Guillaume Attard, Yvan Rossier, Thierry Winiarski, Loann Cuvillier, Laurent Eisenlohr. Deterministic modelling of the cumulative impacts of underground structures on urban groundwater flow and the definition of a potential state of urban groundwater flow: example of Lyon, France. Hydrogeology Journal, 2016, 24, pp.1213-1229. ⟨10.1007/s10040-016-1385-z⟩. ⟨hal-01369493⟩
175 View
0 Download

Altmetric

Share

Gmail Mastodon Facebook X LinkedIn More