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Groundwater Flow and Transport Modelling at Äspö for a Glaciation Period

Published online by Cambridge University Press:  01 February 2011

O. Jaquet ,
P. Siegel ,
W. Klemenz  and
J. O. Selroos
O. Jaquet
Affiliation:
Colenco Power Engineering Ltd, Täfernstrasse 26, CH-5405 Baden, Switzerland
P. Siegel
Affiliation:
Colenco Power Engineering Ltd, Täfernstrasse 26, CH-5405 Baden, Switzerland
W. Klemenz
Affiliation:
Colenco Power Engineering Ltd, Täfernstrasse 26, CH-5405 Baden, Switzerland
J. O. Selroos
Affiliation:
Svensk Kärnbränslehantering AB (SKB), Swedish Nuclear Fuel and Waste Management Co, Box 5864, SE- 102 40 Stockholm, Sweden
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Extract

This study [1] was performed for SKB (Swedish Nuclear Fuel and Waste Management Co) within the framework of the assessment of the long-term safety of a deep repository for spent nuclear fuel.

Subsequent to work performed by [5], SKB decided to carry out additional hydrogeological modelling studies related to glaciation effects at Äspö. In particular, subglacial groundwaterflow and the impact assessment on a repository required further studies. The presence of subglacial groundwater flow beneath ice sheets is due to basal melting occurring during glaciation periods.

As compared to the previous model [5], the domain geometry and processes involved remained identical but this time numerical calculations are performed with the NAMMU program. Modified assumptions corresponding to specific boundary conditions were implemented and additional variations of the base case were simulated.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 807: Symposium Scientific Basis for Nuclear Waste Management XXVII , 2003 , 503
Copyright
Copyright © Materials Research Society 2004

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References

REFERENCES

1. Jaquet, O. and Siegel, P. 2003. Groundwater flow and transport modelling during a glaciation period, SKB Report R-03–04.Google Scholar
2. Lantuéjoul, C. 2002. Geostatistical simulation: models and algorithms, Springer, 256p.Google Scholar
3. Marsic, N., Hartley, L., Jackson, P., Poole, M. and Morvik, A. 2001. Development of hydrogeological modelling tools based on NAMMU, SKB Report R-01–49.Google Scholar
4. Rhén, I., Gustafson, G., Stanfors, R. and Wikberg, P. 1997. Äspö HRL - Geoscientific evaluation 1997/5. Models based on site characterisation 1986–1995. SKB Technical Report TR-97–06.Google Scholar
5. Svensson, U. 1999. Subglacial groundwater flow at Äspö as governedby basal melting and ice tunnels, SKB Report R-99–38.Google Scholar