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Heater experiment: rock and bentonite thermo-hydro-mechanical (THM) processes in the near field

Heater experiment: rock and bentonite thermo-hydro-mechanical (THM) processes in the near field

Objective

The aim is to identify the coupled thermo-hydro-mechanical (THM) processes in both the bentonite buffer and the host rock clay formation after a medium-term heating phase at 100-C under saturated conditions.
A heating tube with a diameter of 10cm was installed in a 7 m deep borehole with a diameter of 30 cm. The gap between the heater and the clay host rock was backfilled with compacted bentonite blocks. A constant temperature of 100-C will be maintained at the surface of the heater in contact with the artificially saturated bentonite buffer for about 18 months. The THM response in both the buffer and the rock will be monitored in-situ.
During this time-period modelling and supporting laboratory work will be performed. Thereafter the buffer and part of the surrounding host rock will be excavated for characterisation at the laboratory.
Additional modelling will be done to confirm the predictions of the first modelling period.

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Coordinator

Federal Institute for Geosciences and Natural Resources

Address

Stilleweg 2
30655 Hannover

Germany

Administrative Contact

Joerg HAMMANN (Professor)

Participants (8)

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ASSOCIATION FOR RESEARCH AND INDUSTRIAL DEVELOPMENT OF NATURAL RESOURCES

Spain

COLENCO POWER ENGINEERING LTD

Switzerland

EMPRESA NACIONAL DE RESIDUOS RADIOACTIVOS S.A.

Spain

GESELLSCHAFT FUER ANLAGEN- UND REAKTORSICHERHEIT (GRS) MBH

Germany

INTERNATIONAL CENTRE FOR NUMERICAL METHODS IN ENGINEERING

Spain

NATIONAL COOPERATIVE FOR THE DISPOSAL OF RADIOACTIVE WASTE

Switzerland

ROTHPLETZ LIENHARD + CIE AG

Switzerland

SWISS FEDERAL INSTITUTE OF TECHNOLOGY ZUERICH

Switzerland

Project information

Grant agreement ID: FIKW-CT-2001-00132

  • Start date

    1 November 2001

  • End date

    31 October 2004

Funded under:

FP5-EAECTP C

  • Overall budget:

    € 2 026 734

  • EU contribution

    € 644 039

Coordinated by:

Federal Institute for Geosciences and Natural Resources

Germany

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