\(8.2 \times 10^{-9}\,{\mathrm {m}}^2/{\mathrm {s}} \) for pegmatitic granite and \( 5.0 \times 10^{-10}\) -span class="a-plus-plus inline-equation id-i-eq4"> \(6.7 \times 10^{-9}\,{\mathrm {m}}^2/{\mathrm {s}} \) for veined gneiss and the permeabilities \( 5.9\,\times 10^{-19}\) -span class="a-plus-plus inline-equation id-i-eq6"> \(6.4 \times 10^{-18}\,{\mathrm {m}}^2 \) and \( 1.4 \times 10^{-20}\) -span class="a-plus-plus inline-equation id-i-eq8"> \(8.6 \times 10^{-17}\,{\mathrm {m}}^2 \) for the same rock types, respectively. We also investigated the dependences of said properties of one another, and found a correlation between effective diffusion coefficient and permeability." />
Gas Phase Measurements of Porosity, Diffusion Coefficient, and Permeability in Rock Samples from Olkiluoto Bedrock, Finland
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  • 作者：Jukka Kuva ; Mikko Voutilainen ; Pekka Kek?l?inen…
  • 关键词：Porosity ; Diffusion ; Permeability ; Crystalline rock ; Gas phase
  • 刊名：Transport in Porous Media
  • 出版年：2015
  • 出版时间：March 2015
  • 年：2015
  • 卷：107
  • 期：1
  • 页码：187-204
  • 全文大小：753 KB
  • 参考文献：1. Aalto, P., Aaltonen, I., Ahokas, H., Andersson, J., Hakala, M., Hell?, P., Hudson, J., Johansson, E., Kemppainen, K., Koskinen, L., Laaksoharju, M., Lahti, M., Lindgren, S., Mustonen, A., Pedersen, K., Pitk?nen, P., Poteri, A., Snellman, M., Yl?-Mella, M.: Programme for repository host rock characterisation in the ONKALO (ReRoC). Working Report 2009-1, Posiva Oy (2009)
    2. Autio, J.: Characterization of the excavation disturbance caused by boring of the experimental full scale deposition holes at TVO-research tunnel. Posiva Report A-96-09, Posiva Oy (1996)
    3. Autio, J., Hjerpe, T., Siitari-Kauppi, M.: The effect of EDZ on the migration of radionuclides in a KBS-3 type repository. In: Oversby, V., Werme, L. (eds.) MRS Proceedings 807: Scientific Basis for Nuclear Waste Management XXVII, MRS, pp. 627-32 (2004)
    4. Byeg?rd, J., Selnert, E., Tullborg, E.L.: Bedrock transport properties. Data evaluation and retardation model. Site descriptive modelling. SDM-site Forsmark. SKB Rapport R-08-98, SKB AB (2008)
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    13. Hartikainen, K., Hartikainen, J.: Posivas site investigations in Olkiluoto, Kivetty, Romuvaara and H?stholmen by He-gas methods in 1997. Posiva Working Report 98-7e, Posiva Oy (1998)
    14. Hartikainen, K., V??t?inen, K., Hautoj?rvi, A., Timonen, J.: Further development and studies of gas methods in matrix diffusion. In: MRS Proceedings 333, pp. 821-26. MRS, Pittsburgh (1994)
    15. Hartikainen, K., Hautoj?rvi, A., Pietarila, H., Timonen, J.: Diffusion measurements on crystalline rock matrix. In: Murakami, T., Ewing, R. (eds.) MRS Proceedings 353: Scientific Basis for Nuclear Waste Management XVIII, pp. 435-40. MRS, Pittsburgh (1995)
    16. Hartikainen, K., Pietarila, H., Rasilainen, K., Nordman, H., Ruskeeniemi, T., H?ltt?, P., Siitari-Kauppi, M., Timonen, J.: Characterization of the altered zone around a fracture in Palmottu natural analogue. In: MRS Proceedings 412, pp. 839-46. MRS, Pittsburgh (1996b)
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  • 刊物类别：Earth and Environmental Science
  • 刊物主题：Earth sciences
    Geotechnical Engineering
    Industrial Chemistry and Chemical Engineering
    Civil Engineering
    Hydrogeology
    Mechanics, Fluids and Thermodynamics
  • 出版者：Springer Netherlands
  • ISSN：1573-1634
文摘
The Finnish plan for final disposal of nuclear waste is an underground repository in crystalline bedrock in Olkiluoto. In the safety analysis of the repository, it is vital to know the transport properties of the bedrock. We set out to investigate these properties by measuring porosities of rock samples with Ar-gas pycnometry and diffusion coefficients and permeabilities of the same samples with a He-gas method. Diffusion of gases is about 10,000 times faster than diffusion of elements in water, and thus the gas methods are practical tools when determining the properties of relatively tight samples. The porosities were 0.44-.63?% for pegmatitic granite (three samples) and 0.19-.9?% for veined gneiss (15 samples). The effective diffusion coefficients were \( 3.2 \times 10^{-9}\) -span class="a-plus-plus inline-equation id-i-eq2"> \(8.2 \times 10^{-9}\,{\mathrm {m}}^2/{\mathrm {s}} \) for pegmatitic granite and \( 5.0 \times 10^{-10}\) -span class="a-plus-plus inline-equation id-i-eq4"> \(6.7 \times 10^{-9}\,{\mathrm {m}}^2/{\mathrm {s}} \) for veined gneiss and the permeabilities \( 5.9\,\times 10^{-19}\) -span class="a-plus-plus inline-equation id-i-eq6"> \(6.4 \times 10^{-18}\,{\mathrm {m}}^2 \) and \( 1.4 \times 10^{-20}\) -span class="a-plus-plus inline-equation id-i-eq8"> \(8.6 \times 10^{-17}\,{\mathrm {m}}^2 \) for the same rock types, respectively. We also investigated the dependences of said properties of one another, and found a correlation between effective diffusion coefficient and permeability.

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