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Determination of the Porosity, Permeability and Diffusivity of Rock in the Excavation-Disturbed Zone Around Full-Scale Deposition Holes Using the He-Gas Method

Published online by Cambridge University Press:  10 February 2011

J. Autio ,
J. Timonen ,
T. Aaltonen ,
M. Laajalahti ,
K. Kuoppamäki  and
J. Maaranen
J. Autio
Affiliation:
Saanio & Riekkola Consulting Engineers, Laulukuja 4, FIN-00420 Helsinki, Finland
J. Timonen
Affiliation:
University of Jyväskylä, Department of Physics, Jyväskylä, Finland
T. Aaltonen
Affiliation:
University of Jyväskylä, Department of Physics, Jyväskylä, Finland
M. Laajalahti
Affiliation:
University of Jyväskylä, Department of Physics, Jyväskylä, Finland
K. Kuoppamäki
Affiliation:
University of Jyväskylä, Department of Physics, Jyväskylä, Finland
J. Maaranen
Affiliation:
University of Jyväskylä, Department of Physics, Jyväskylä, Finland
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Abstract

In a nuclear waste repository, rock in the excavation-disturbed zone adjacent to the walls of deposition holes for waste canisters is a potential pathway for the transport of corrosive agents and radionuclides. Three experimental holes the size of deposition holes in a KBS-3 type repository (depth 7.5 m and diameter 1.5 m) were bored in hard granitic rock in the Research Tunnel at Olkiluoto and the porosities, effective diffusivities and permeabilities of rock in the excavation-disturbed zone were determined in a direction parallel to the disturbed surface using He-gas methods. Permeability and diffusivity in a direction parallel to the rock schistosity was found to be clearly larger than in a direction perpendicular to it.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 556: Symposium QQ – Scientific Basis for Nuclear Waste Management XXII , 1999 , 759
Copyright
Copyright © Materials Research Society 1999

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References

REFERENCES

1. Autio, J., & Kirkkomäki, T., 1996. Boring of full scale deposition holes using a novel dry blind boring method. Report POSIVA-96-07, Posiva Oy, Helsinki and similar report PR D-96-030 in SKB's (Svensk Kärnbräslehantering AB) report series.Google Scholar
2. Autio, J., 1996. Characterization of the excavation disturbance caused by boring of the experimental full scale deposition holes at TVO-Research Tunnel, Report POSIVA-96-09, Posiva Oy, Helsinki and similar report TR 97-24 in SKB's (Svensk Kärnbräslehantering AB) report series.Google Scholar
3. Autio, J. and Siitari-Kauppi, M., in Scientific Basis for Nuclear Waste Management XXI, edited by McKinley, I.G. & McCombie, C.. (Mater.Res.Soc.Proc 506, Warrendale, PA,1997) pp. 597–604 Google Scholar
4. Hartikainen, K., Väätäinen, K., Hautojärvi, A. and Timonen, J. in Scientific Basis for Nuclear Waste Management XVII, edited by Barkatt, & Konynenburg, R. Van (Mater.Res.Soc. Proc., Pittsburg, PA, 1994) pp. 821–826 Google Scholar
5. Väätänen, K., Timonen, J. and Hautojärvi, A. in Symp. Scientific Basis for Nuclear Waste Management XVI, edited by Interrante, C.G. & Pabalan, R.T. (Mater. Res. Soc. Proc., Pittsburgh, PA, 1993) pp. 851–856.Google Scholar
6. Hartikainen, J., Hartikainen, K., Hautojärvi, A., Kuoppamäki, K. & Timonen, J. 1996. Helium gas methods for rock characteristics and matrix diffusion. Report Posiva-96-22. Posiva Oy, Helsinki.Google Scholar
7. Hartikainen, K., Hautojärvi, A., Pietarila, H. and Timonen, J., in Scientific Basis for Nuclear Waste Management XVIII, edited by Murakami, T. and Ewing, R.C. (Mater. Res. Soc. proc., Pittsburgh, PA, 1995) pp. 435–440.Google Scholar
8. Aaltonen, T., Autio, J., Kuoppamäki, K., Laajalahti, M., Maaranen, J., Timonen., J. Measurements with the He-gas method of the disturbed zone caused by boring. Report POSIVA-98, Posiva Oy, Helsinki and similar report in SKB's (Svensk Kdirnbrdslehantering AB) report series, (in Preparation).Google Scholar
9. Carslaw, H.S. and Jaeger, J.C., Conduction of Heat in Solids, 2nd. Ed. (Oxford University Press, Oxford, 1959).Google Scholar
10. Dullien, F.A.L., Porous Media Fluid Transport and Pore Structure (Academic Press, Inc., San Diego, California, 1979).Google Scholar
11. Kell, G. S., Precise presentation of volume properties of Water at One Atmosphere, J. of Chemical and Engineering Data, Vol.12 (1967) pp. 66–69.Google Scholar
12. Rasilainen, K., Hellmuth, K-H, Kivekäs, L., Melamed, A., Ruskeeniemi, T., Siitari-Kauppi, M., Timonen, J. & Valkiainen, M., 1996, an interlaboratory comparison of methods for measuring rock matrix porosity, VTT-TIED-1776, Technical Research Centre of Finland, Espoo.Google Scholar
13. Autio, J., Siitari-Kauppi, M., Timonen, J., Hartikainen, K. & Hartikainen, , J. Contam. Hydr. 763, (1998) (In Print).Google Scholar