Safety of Nuclear Waste Disposal
Safety of Nuclear Waste Disposal
SaND
Articles | Volume 1
Articles | Volume 1
https://doi.org/10.5194/sand-1-133-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/sand-1-133-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 1
Conference Abstract
 | 
10 Nov 2021
Conference Abstract |  | 10 Nov 2021

Large-scale testing of a sandwich shaft-sealing system at the Mont Terri rock laboratory

Klaus Wieczorek, Katja Emmerich, Rainer Schuhmann, Jürgen Hesser, Markus Furche, David Jaeggi, Senecio Schefer, Jan Aurich, Juan Carlos Mayor, Simon Norris, Ken Birch, Manuel Sentis, José Luis García-Siñeriz, Franz Königer, Uwe Glaubach, Christopher Rölke, and Ralf Diedel

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Latest update: 05 Sep 2025
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Short summary
A Sandwich shaft sealing system consists of alternating sealing segments (DS) of bentonite and equipotential segments (ES) with a high hydraulic conductivity. Water accessing the system results in swelling of the DS. Within the ES the water is evenly distributed over the cross section of the seal. Thus, swelling is more homogeneous and seal bypass is reduced. At the Mont Terri rock laboratory, this sealing system is tested in connection with the host rock in a large-scale in-situ experiment.
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