Probabilistic performance assessment of a deep tunnel for a radioactive waste repository in French COx claystone

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Abstract

A preliminary probabilistic study of the stability of a circular drift excavated for a radioactive waste repository in the French Callovo-Oxfordian claystone is presented and discussed. An analytical mechanical model assuming isotropic elastic behaviour and linear plastic softening was used. Particular emphasis here is placed on the uncertainty of mechanical property values. The test results from several laboratories showed considerably variable property values and they have been interpreted statistically in this investigation. The obtained statistical results were used in a Monte Carlo framework. The performance of the drift was evaluated in terms of the probability of threshold exceedance in the extent of the plastic zone.
Original languageEnglish
Title of host publicationProceedings of the 2nd Petrus-OPERA PhD and early stage researcher conference 2016
Subtitle of host publication Radioactive Waste Management and Disposal
EditorsP.J. Vardon, D. Bykov
Place of PublicationDelft
PublisherDelft University of Technology
Pages61-63
Number of pages3
ISBN (Print)978-94-6186-669-1
Publication statusPublished - 2016
Event2nd Petrus-OPERA PhD and early stage researcher conference 2016: Radioactive Waste Management and Disposal - Delft University of Technology, Delft, Netherlands
Duration: 27 Jun 20161 Jul 2016
http://petrus-opera2016.strikingly.com/
http://petrus-opera2016.eu/

Conference

Conference2nd Petrus-OPERA PhD and early stage researcher conference 2016
Abbreviated titlePetrus-OPERA PhD Conference 2016
CountryNetherlands
CityDelft
Period27/06/161/07/16
Internet address

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