Regional groundwater flow modelling of the confined aquifers below the Boom Clay in NE Belgium

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Abstract

For more than 35 years, SCK†CEN has been investigating the possibility of high-level radioactive waste disposal in the Boom Clay in northeastern Belgium. This research, defined in the long-term management programme for high and medium long-lived waste of ONDRAF/NIRAS, includes the regional hydrogeological modelling of the aquifer systems surrounding the Boom Clay. In this paper, the most recent update of the Deep Aquifer Pumping model (DAP) is described, which is capable of quantifying the regional groundwater flow in the complex confined aquifers lying below the Boom Clay in NE Belgium. The DAP model was successfully calibrated using an automated inverse optimization algorithm and is able to reproduce satisfactorily the general trends in the observed groundwater heads. This model can be used as a tool for planning future characterization efforts and reducing the predictive model uncertainty.

Details

Original languageEnglish
Pages (from-to)163-177
JournalJournal of the Geological Society
Volume400
DOIs
Publication statusPublished - Sep 2014
EventClays in Natural and Engineered Barriers for Radioactive Waste Confinement - ANDRA, Montpellier, France
Duration: 22 Oct 201225 Oct 2012

Keywords

  • regional modelling, confined aquifers, Campine area, calibration, sensitivity analysis

ID: 317954