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The aim of the work presented is to study the mechanical behaviour of lining galleries in deep clays. This report constitutes part of the research into the feasibility of the geological disposal of radioactive waste, with the aim of assessing the long-term stability and the optimum size of the gallery. In particular, a closure controlled lining is studied, which constitutes a direct application of the convergence-confinement method and is especially well-suited to deep clays. The performance and interpretation of the convergence controlled lining test, which was performed in the experimental gallery of Mol in Belgium, is also reported. The instrumentation used was designed in order to find out the stress field exerted by the rockmass on the lining and the internal stress field inside the lining and the gallery closure. Analysis of the measurements obtained between November 1987 and December 1989 shows that they are all in good agreement and that the lining design was well chosen.

Additional information

Authors: BERNAUD D, Ecole Polytechnique, Laboratoire de Mécanique des Solides, Palaiseau (FR);ROUSSET G, Ecole Polytechnique, Laboratoire de Mécanique des Solides, Palaiseau (FR)
Bibliographic Reference: EUR 13267 FR (1991) 194 pp., FS, ECU 16.25
Availability: (2)
ISBN: ISBN 92-826-0506-X
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