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Subsurface Flow and Sulfate Dissolution Response to the Construction and Restoration of the River Weir in Hessigheim, Germany

Montenegro, Héctor; Kauther, Regina; Strasser, Daniel; Liesch, Tanja; Goldscheider, Nico

Abstract:
The construction of the combined ship lock weir in Hessigheim, Germany, created a river stage difference of more than 6m and intensified subsequently the sur-face–subsurface water exchange and modified the natural subsurface flow field. In the sulfate-bearing hydrogeological setting, increased infiltration and intensified subsurface flow triggered related dissolution processes. Soon after construction, the structure started suffering from subsidence due to progressive leaching and demanded extensive grouting. In the course of approximately 25years, groundwa-ter heads and subsurface sulfate concentrations responded distinctively to grouting campaigns. The analysis confirms that as a result of its high solubility and altered hydrogeological conditions, gypsum karst develops on a human rather than on a geological time scale. Grouting measures considerably slowed down these pro-cesses, however, at the cost of subsurface flow field variations which will ultimately transfer the zone of enhanced dissolution.



Originalveröffentlichung
DOI: 10.1007/978-3-319-45465-8_6
Zugehörige Institution(en) am KIT Institut für Angewandte Geowissenschaften (AGW)
Publikationstyp Buchaufsatz
Jahr 2017
Sprache Englisch
Identifikator ISBN: 978-3-319-45464-1
ISSN: 2511-2066, 2511-2082
KITopen-ID: 1000095491
Erschienen in EuroKarst 2016, Neuchâtel – Advances in the Hydrogeology of Karst and Carbonate Reservoirs. Ed.: P. Renard
Auflage 1st ed.
Verlag Springer International Publishing, Cham
Seiten 57–63
Serie Advances in Karst Science
Vorab online veröffentlicht am 04.01.2017
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