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Discrete Fracture Network Modelling of Tracer Migration Experiments at the Kamaishi Mine

Published online by Cambridge University Press:  15 February 2011

Masahiro Uchida  and
Atsushi Sawada
Masahiro Uchida
Affiliation:
Power Reactor and Nuclear Fuel Development Corporation, 4–33 Muramatsu, Tokai-mura, Ibaraki-ken, 319–11, JAPAN.
Atsushi Sawada
Affiliation:
Power Reactor and Nuclear Fuel Development Corporation, 4–33 Muramatsu, Tokai-mura, Ibaraki-ken, 319–11, JAPAN.
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Abstract

This paper presents the results of a discrete fracture network modelling for the non-sorbing tracer migration experiments, which were conducted in the fractured rock at the Kamaishi mine. A newly developed in-plane heterogeneity model, which can address the channelling effects within a fracture, and the matrix diffusion model, which can simulate the retardation time due to the matrix diffusion adjacent to fracture were applied in this study. As a result, the matrix diffusion model better reproduces the general shape of breakthrough curves. The transport aperture At was approximately one order of magnitude larger than the hydraulic aperture Ac derived from the cubic law.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 353: Symposium – Scientific Basis for Nuclear Waste Management XVIII , 1994 , 387
Copyright
Copyright © Materials Research Society 1995

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References

REFERENCES

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