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Auteur (up) Ballesteros, D.; Malard, A.; Jeannin, P.Y.; Jiménez-Sánchez, M.; García-Sansegundo, J.; Meléndez-Asensio, M.; Sendra, G.
Titre KARSYS hydrogeological 3D modeling of alpine karst aquifers developed into geological complex areas: Picos de Europa National Park (Spain) Type Journal Article
Année 2015 Publication Environmental Earth Sciences Revue Abrégée
Volume Numéro Pages DOI 10.1007/s12665-015
Mots-Clés Karsys
Résumé Karst aquifers are valuable groundwater resources whose management requires the use of functioning hydrogeological models. The KARSYS approach provides an explicit 3D conceptual model of the geometry and the functioning of karst aquifers that has been successfully applied in Swiss and Slovenian aquifers. In this work, KARSYS is applied in a complex geological area: the Picos de Europa National Park (Spain). The hydrogeological 3D model (500 km2) shows an alpine karst aquifer compartmentalized into 32 groundwater bodies dammed up by subvertical barriers creating elevated saturated zones (water tables at 1153 m asl) and lower ones (water tables at 145 m asl). The recharge is through 18 spring catchment areas. The groundwater flows to the saturated zones pass through vertical to inclined trajectories, and phreatic flows are oriented toward NW, NE and N. KARSYS can be applied to any geologically complex area at a regional scale, although the geological structure should be simplified and the precision in some places is low.
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Éditeur de collection Titre de collection Titre de collection Abrégé
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Région Expédition Conférence
Notes Approuvé no
Numéro d'Appel refbase @ user @ collection 28
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Auteur (up) Ballesteros, D.; Malard, A.; Jeannin, P.Y.; Jiménez-Sánchez, M.; García-Sansegundo, J.; Meléndez-Asensio, M.; Sendra, G.
Titre Influence of the rivers on speleogenesis combining KARSYS approach and cave levels. Picos de Europa, Spain Type Book Chapter
Année 2015 Publication Hydrogeological and environmental investigations in karst systems. Environmental Earth Sciences Revue Abrégée
Volume 1 Numéro Pages 599-607
Mots-Clés Karsys
Résumé The influence of rivers on speleogenesis is studied analyzing the cave

levels located in the underground drainage areas related to two fluvial basins. Cave

levels are analyzed through their vertical distribution profiles. The underground

limits of the fluvial basins are defined using a 3D geometric model of the karst

aquifer established according to the KARSYS approach. The aim of this work is to

analyze the influence of the rivers on cave evolution using cave morphology. The

study area corresponds to the Western and Central massifs of Picos de Europa

(Northern Spain), with 214 km of cave conduits up to 1.6 km vertical range. As a

result, we established two sequences of development of the cave levels related to

the differences of the incision rate of the Cares and Dobra Rivers, and the partial

capture of the Western Massif by the Cares River.
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Editeur Springer Lieu de Publication Éditeur
Langue Langue du Résumé Titre Original
Éditeur de collection B. Andreo et al. Titre de collection Titre de collection Abrégé
Volume de collection Numéro de collection Edition
ISSN ISBN Médium
Région Expédition Conférence
Notes Approuvé no
Numéro d'Appel collection 16
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Auteur (up) Jeannin, P.-Y.; Malard, A.; Rickerl, D.; Weber, E.
Titre Assessing karst-hydraulic hazards in tunneling – the Brunnmühle spring system – Bernese Jura, Switzerland Type Journal Article
Année 2015 Publication Environmental Earth Sciences Revue Abrégée
Volume 74(12) Numéro Pages 7655-7670
Mots-Clés KarstALEA
Résumé Drilling a tunnel in a karst region requires the assessment of disturbances in the

hydrogeological functioning of aquifers and flow-systems as well as disturbances for

the tunnel itself. A complete characterization of the karst hydrogeological functioning

and the establishment of prevention measures are essential in order to insure a

suitable construction. The paper relates investigations which were conducted in the

frame of the construction of a safety gallery (Sisto) in the bernese Jura (Switzerland).

This gallery is located close to the outlet of a regional karst system and parallel to an

existing highway tunnel, which met numerous disorders in the past due to the

intersection of active karst conduits with a discharge reate exceeding 1 m3/s.

The KarstALEA method was applied along the Sisto trace in order to identify sections

with a high probability of karst occurrences and to characterize the type of karst related

problems. The main issue turned out to be related to water head and discharge, which

could potentially be cut by the tunnel construction. The system discharge rate may

frequently exceed 10 m3/s, and most of this water could potentially flow into the tunnel.

Therefore, a hydraulic model was set up in order to assess expected flow rates and

heads if conduits are intersected during the construction. Based on this model and on

meteorological and hydrological real-time measurements, a predictive model was

established in order to anticipate high-flows events.
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Langue Langue du Résumé Titre Original
Éditeur de collection Titre de collection Titre de collection Abrégé
Volume de collection Numéro de collection Edition
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Région Expédition Conférence
Notes DOI: 10.1007/s12665-015-4655-5 Approuvé no
Numéro d'Appel refbase @ user @ collection 129
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Auteur (up) Malard, A.; Jeannin, P.-Y.; Rickerl, D.
Titre Impact of a Tunnel on a Karst Aquifer: Application on the Brunnmühle Springs (Bernese Jura,Switzerland) Type Book Chapter
Année 2015 Publication Hydrogeological and environmental investigations in karst systems. Environmental Earth Sciences Revue Abrégée
Volume Numéro Pages 457-463
Mots-Clés KarstALEA
Résumé Tunnel drilling in karst regions often leads to major disturbances in the hydrogeological functioning of

aquifers and flow-systems. Numerous examples in Switzerland do exist and induced significant costs,

which were not or rarely anticipated (e.g.: Flims, Jeannin et al. 2009). The Ligerztunnel is one such

example. The tunnel was built a few hundreds of meters upstream from the Brunnmühle spring, which

contributes to the drinking water supply of communities of Twann and Ligerz. During the construction, a

major karst conduit with a huge discharge rate was intersected in a side exploration tunnel. Overflowing

water was diverted in the Twannbach canyon. In the main section, smaller conduits were found and

drained outside by pipe leading water close to the Brunnmühle spring. Actually, authorities want to add a

safety gallery parallel to the main tunnel. In this view, SISKA is in charge of evaluating the hydrological

disturbances on the spring regime. The paper presents the approach applied to assess the potential effect of

the drilling of a new tunnel near to a group of karst springs and pumping wells. The approach combines

available spatial information and a hydraulic model. The KARSYS approach is first applied on the system

in order to set up a 3D geological and hydrogeological model of the karst aquifer and the related systems.

The spatial distribution of karst conduits within the massif is assessed based on a speleogenetical and

inception horizons model (KarstALEA method). Inferring from these models, a karst conduits network is

generated. The downstream part of the conduits network, which concerns the vicinity of the tunnels

project, is precisely calibrated using head and discharge data. Flow in this conduits network is then

simulated using SWMM 5.0 in order to reproduce the hydrological responses of the different outlets

(permanent springs, drainage devices, overflow springs, etc.).
Adresse
Auteur institutionnel Thèse
Editeur Springer Lieu de Publication Éditeur
Langue Langue du Résumé Titre Original
Éditeur de collection B. Andreo et al. Titre de collection Titre de collection Abrégé
Volume de collection Numéro de collection Edition
ISSN ISBN Médium
Région Expédition Conférence
Notes DOI 10.1007/978-3-642-17435-3_52 Approuvé no
Numéro d'Appel refbase @ user @ collection 124
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