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HomeBackfilling and sealing of underground respositories for radioactive waste in salt
Bambus II project : final report
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This report presents results of the Bambus II project (Backfill and material behaviour in underground salt reporsitories), a joint project between FZK (DE, coordinator), BGR (DE), DBE, (DE), G.3S (FR), GRS (DE), IfG (DE), NRG (NL) , UPC (ES) and US DoE/CBFO (US), carried out between August 2000 and April 2003. The project was funded by the European Commission and the national governments and authorities. The project extends the basis for optimising repository design and construction and for predicting long-term performance of barriers in a salt repository for radioactive waste. The research includes in-situ investigations, laboratory experiments, forensic examinations, computational simutations and desk studies. In-situ investigations were conducted in the Asse salt mine subsequent to completion of the large-scale experiment 'TSDE' (Thermal simulation of drift emplacement) in wich six disposal cask mock-ups were heated for over eight years. Two disposal cask mock-ups and a large number of instruments were recovered, cores retrieved, and geophysical studies were conducted. Laboratory tests evaluated properties of the backfill and the rock salt, inckuding the disturbed zone. Physical, mechanical and hydrological experiments quantified parameter values requisite for material models and described attributes of backfill and rock salt at advanced stages of compaction and deformation. Post-test examination of candidate container material samples recovered from the TSDE test drift exhibited minimal corrosion. Modelling studies analysed the thermomechanical evolution of the TSDE experiment and evaluated extant predictive capabilities. Computational results compared favourably with in-situ experimental results including temperature profiles, stress distributions, displacements and the attendant properties of compacted backfill, intact rock salt and the excavation damage zone. Desk stidues addressed retrieval issues and documented the scientific and technical results of the entire TSDE project (1985 to 2002)
- Published:
- Corporate author(s): Bundesanstalt für Geowissenschaften und Rohstoffe (DE) , Directorate-General for Research and Innovation (European Commission) , Forschungszentrum Karlsruhe (DE)
- Personal author(s): Bechthold, W ; Heusermann, S ; Smailos, E
- Themes: Environment policy and protection of the environment , Nuclear energy and safety
- Subject: applied research , nuclear research , radioactive waste , testing , underground storage of waste
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| ISSN | ISBN 92-894-7767-9 | DOI | Catalogue number KI-NA-20-621-EN-S |
- Released on EU publications website:
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