Transient model of the confined aquifers located below the Boom Clay. Regional Hydrogeological Model for the Mol Site

Matej Gedeon, Isabelle Wemaere

    Research outputpeer-review


    Performance assessment of the geological disposal of high-level radioactive waste includes the prediction of the far-future transport of the radionuclides in the aquifers surrounding the prospective host rock. Such predictions are possible only if we fully understand the key processes that influence the groundwater flow at the regional scale. Seeking such understanding is the task for the regional hydrogeological programme that includes the last update of the regional hydrogeological model (NEB-2002) for the Mol site reported in 2003. This model was not reproducing satisfactorily the groundwater flow in the deep aquifers located below the Boom Clay due to overexploitation. To improve the simulation of water flow in the confined aquifers below the Boom Clay, accounting for effects caused by excessive pumping. Therefore a specific transient model will be built which should be able to reproduce the unsteady conditions caused by excessive pumping. This report describes the specific transient model for simulating the effects of the overexploitation of the Lower Rupelian and the Lede-Brussel aquifers. It includes the complete set of the assumptions, input data, commented results and sensitivity analyses.
    Original languageEnglish
    PublisherSCK CEN
    Number of pages87
    StatePublished - Apr 2009

    Publication series

    NameSCK•CEN Reports
    PublisherStudiecentrum voor Kernenergie

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