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Implementation of a Modeling Concept to Predict Hydraulic and Geochemical Conditions During Flooding of a Deep Mine

  • Thomas Metschies
  • Ulf Jenk
Part of the Springer Geology book series (SPRINGERGEOL)

Abstract

More than four decades of intensive uranium mining in Germany resulted in a legacy of surface and underground mining objects requiring remediation in a densely populated area. The remediation concepts have to take into account the predictions of future environmental impacts for various remediation activities. Controlled flooding of deep uranium mines to a natural flooding or overflow level is the general remediation solution selected. Thereby the local and regional hydraulic and geochemical conditions of lager areas at and around the former mining site are influenced over a long period. For the optimization of the operations as well as the application for the necessary permissions model predictions are regularly used. In the presented case of the Königstein deep mine flooding the modeling concept followed combines commercially available groundwater modeling software to account for the relevant hydrogeological and geochemical processes in the mine and the influenced surroundings. It was found that there are no off-the-shelf solutions available allowing to model both the hydraulic and geochemical conditions on a local and regional scale. Furthermore a flexible modeling concept is required to include additional modeling tools if necessary and to allow better traceable model predictions. Based on monitoring of the ongoing flooding process the concept is further developed and the models are continuously checked, adopted and extended. Thereby the system understanding is improved allowing to further narrow the prediction uncertainties.

In addition to a description of the applied modeling tools and their interaction the paper presents the experiences gained during this process and their implications for the further improvement of the model predictions.

Keywords

Geochemical Condition Remediation Activity Contaminant Release Surrounding Aquifer Mine Flooding 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

References

  1. Gatzweiler R, Jakubick AT (1998) Hydrogeological predictions in the remediation of the decommissioned WISMUT facilities. In: Proc. Int. Workshop “Uranium Mining and Hydrogeology II” (ed. by B Merkel and C Helling), Freiberg, September 1998, Verlag Sven von Loga, Köln 1998, p. 1Google Scholar
  2. Jenk U, Nindel K, Zimmermann U (2008) Underground in-situ mine water treatment in a flooded uranium mine at the WISMUT Königstein site – motivation activities and outlook. In: Merkel B, Hasche-Berger A (Eds), 2008 Uranium Mining and Hydrogeology, Springer Heidelberg, pp 431–436CrossRefGoogle Scholar
  3. Van Genuchten T (1980) A closed form equation for predicting the hydraulic conductivity of unsaturated soils. Soil Sci. Soc. Am. J., pp. 892–898Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Thomas Metschies
    • 1
  • Ulf Jenk
    • 1
  1. 1.Wismut GmbHChemnitzGermany

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