Skip to main content Accessibility help
×
Home

Radionuclide Migration Analysis Using A Discrete Fracture Network Model

  • Y. IJIRI (a1), A. SAWADA (a1), E.K. WEBB (a1), S. WATARI (a1), K. HATANAKA (a1), M. UCHIDA (a1), K. ISHIGURO (a1), H. UMEKI (a1) and W.S. DERSHOWITZ (a2)...

Abstract

This paper describes an approach for assessing the geosphere performance of nuclear waste disposal in fractured rock. In this approach, a three-dimensional heterogeneous channelnetwork model is constructed using a stochastic discrete fracture network (DFN) code. Radionuclide migration in the channel-network model is solved using the Laplace transform Galerkin finite element method, taking into account advection-dispersion in a fracture network, matrix diffusion, sorption in the rock matrix as well as radioactive chain decay. Preliminary radionuclide migration analysis was performed for fifty realizations of a synthetic block-scale DFN model. The total radionuclide release from all packages in the repository was estimated from the statistics of the results of fifty realizations under the hypothesis of ergodicity. The interpretation of the result of the three-dimensional network model by a combination of simpler one-dimensional parallel plate models is also discussed.

Copyright

References

Hide All
1. Dershowitz, W.S., Wallmann, P. and Kindred, S., Stripa Proj. TR91–16 (1991).
2. Dershowitz, W.S., Wallmann, P., Geier, J.E. and Lee, G., Stripa Proj. TR91–23 (1991).
3. Herbert, A. and Splawski, B., Stripa Proj. TR90–14 (1990).
4. Cacas, M.C., Ledoux, E., Marsily, G. de, Tillie, B., Barbreau, A., Durand, E., Feuga, B. and Peaudecerf, P., Wat. Res. Res. 26 (3), pp. 479489 (1990).
5. Cacas, M.C., Ledoux, E., Marsily, G. de, Barbreau, A., Calmels, P., Gaillard, B. and Margritta, R., Wat. Res. Res. 26 (3), pp.491500 (1990)
6. Dverstorp, B., Andersson, J. and Nordqvist, W., Wat. Res. Res. 28 (9), pp.23272343 (1992).
7. Sudicky, E.A., Geoderma, 46, pp. 209232 (1990).
8. Chilès, J.P. and deMarsily, G., Flow and Contaminant Transport in Fractures Rock, edited by Bear, J., Tsang, C.F. and deMarsily, G. (Academic Press, Inc., 1993) p. 181.
9. Ohno, H. and Kojima, K., J. Japan Soc. Eng. Geology, 34 (2), pp. 1226 (1993) [in Japanese].
10. Hatsuyama, Y., Otsu, H., Oya, T. and Okamoto, J., Proc. Japan Symp. Rock Mech., 25th, pp. 313317 (1993) [in Japanese].
11. Baecher, G.B., Lanney, N.A. and Einstein, H.H., Proc. U.S. Symp. Rock Mech., 18th (1977)
12. Uchida, M. and Sawada, A.in Scientific Basis for Nuclear Waste Management XVIII, edited by Murakami, T. and Ewing, R.C. (Mater. Res. Soc. Proc. 353, kyoto, Japan, 1995) pp.387394
13. Ijiri, Y., Sawada, A., Hatanaka, K., Webb, E.K., Uchida, M., Ishiguro, K. and Umeki, H., Proc. GEOTRAP Workshop, 3rd, Barcelona, Spain, (1998) [in printing].

Radionuclide Migration Analysis Using A Discrete Fracture Network Model

  • Y. IJIRI (a1), A. SAWADA (a1), E.K. WEBB (a1), S. WATARI (a1), K. HATANAKA (a1), M. UCHIDA (a1), K. ISHIGURO (a1), H. UMEKI (a1) and W.S. DERSHOWITZ (a2)...

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed