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Migration in a Single Fracture

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It has been decided to investigate flow and sorbtion in a readily identifiable fracture which can be excavated for a detailed examination of flow path and sorbtion sites. The investigation is performed in the Stripa mine, 360 m below ground, where there is a natural water flow towards the drift. The bedrock is granite.

A method of tracer injection into a fracture, either as a step or a pulse, and of collection of water samples under anoxic atmosphere has been suggested and tested in a preparatory investigation. The introduction of tracers can be done either under natural pressure or by injection with over pressure.

An injection of Rhodamine-WT, Na-iodide and Na-Fluorescein with over pressure has been performed. It has been found that Rhodamine-WT is influenced in some way along the the flow path.

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References

  1. “Handling of Final Storage of Unreprocessed Spent Nuclear Fuel”, Vol II Technical KBS Report (1978).

  2. Neretnieks, I., Eriksen, T., Tahtinen, P., “Tracer Movment in a Single Fracture in Granitic Rock some Experimental Results and their Interpretation”, Accepted for publication in Water Resources Research 1982

  3. Gustavsson, G., Klockars, K-E., “Studies on Groundwater Transport in Fractured Crystalline Rock under Controlled Conditions using non Radioactive Tracers”, Technical Report KBS 81-07.

  4. Abelin, H., Neretnieks, I., “Migration in a Single Fracture Preliminary Experiments in Stripa”, Internal Report KBS 81-03.

  5. Eriksen, T., Dep. Nucl. Chem, Royal Inst. Techn. Stockholm, Personal communic. 1982.

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Authors and Affiliations

  1. Department of Chemical Engineering, Royal Institute of Technology, S-100 44, Stockholm, Sweden

    Harald Abelin, Jard Gidlund & Ivars Neretnieks

Authors
  1. Harald Abelin
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  2. Jard Gidlund
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  3. Ivars Neretnieks
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Abelin, H., Gidlund, J. & Neretnieks, I. Migration in a Single Fracture. MRS Online Proceedings Library 11, 529 (1981). https://doi.org/10.1557/PROC-11-529

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  • DOI: https://doi.org/10.1557/PROC-11-529

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