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A Channeling Experiment to Study Flow and Transport in Natural Fractures

Published online by Cambridge University Press:  26 February 2011

Harald Abelin ,
Lars Birgersson ,
Thomas Ågren  and
Ivars Neretnieks
Harald Abelin
Affiliation:
CHEMFLOW AB, Stockholm, SWEDEN
Lars Birgersson
Affiliation:
CHEMFLOW AB, Stockholm, SWEDEN
Thomas Ågren
Affiliation:
CHEMFLOW AB, Stockholm, SWEDEN
Ivars Neretnieks
Affiliation:
Department of Chemical Engineering, Royal Institute of Technology, Stockholm, SWEDEN
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Abstract

Model calculations show that channeling may have a detrimental effect on radionuclide transport because fast channels may carry some of the mass of the radionuclides considerably faster than the average flow would and may give this portion considerably less time to decay. Channeling further aggravates the retardation of the sorbing nuclides because less surface area is available for sorption in a channel within a fracture than if the whole fracture is exposed to the flowing water. An ongoing experiment in the Stripa mine aims at studying some aspects of channeling. A special packer of a new design is used. Preliminary results show that there is uneven flow in the fractures which indicates channeling.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 127: Symposium BERLIN – Scientific Basis for Nuclear Waste Management XII , 1988 , 661
Copyright
Copyright © Materials Research Society 1989

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References

LITERATURE

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