Abstract
Ongoing developments in geological and hydrogeological investigation techniques, especially direct-push methods, have led to an increase in the quality, density and spatial resolution of data available from such investigations. This has created new challenges in the development of numerical models in terms of accurately and efficiently translating detailed and complex conceptual models into effective numerical models. Suitable geometrical and numerical modelling tools are essential in order to meet these challenges. This paper describes the development of a three-dimensional hydrogeological flow model for a contaminated site near Berlin, Germany, based on high-resolution geological data obtained principally using direct-push methods. The available data were first interpreted to construct a detailed GIS-based geological model, which formed the basis of the conceptual site model. The conceptual model was then translated into a geometrical model, which was used to create a finite element numerical model. An innovative geometry object-based approach enabled the complex structural details of the conceptual model to be accurately reproduced in the numerical model domain. The resulting three-dimensional steady-state unconfined flow model was successfully calibrated using external automated calibration software, whereby parameter values for groundwater recharge and hydraulic conductivity were determined.
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Acknowledgments
This work is funded by the German Ministry of Education and Research (BMBF) under grants 02WN0352 and 0330512 as a part of the KORA priority program, sub-projects 1.2 and 7.1 and additional funding from the Brandenburgische Boden Gesellschaft für Grundstücksverwaltung und—verwertung mbH (BBG).
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Miles, B., Kalbacher, T., Kolditz, O. et al. Development and parameterisation of a complex hydrogeological model based on high-resolution direct-push data. Environ Geol 52, 1399–1412 (2007). https://doi.org/10.1007/s00254-006-0582-9
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DOI: https://doi.org/10.1007/s00254-006-0582-9