Skip to main content

Fractures and self-healing within the excavation disturbed zone in clays

Objective

As in all nuclear power generating countries, high and long-lived radioactive waste management is an important environmental issue today. Underground storage in deep clay geological formation is one of the promising options to dispose these wastes. An essential item for the long-term safety of High Level Waste underground repositories is the evaluation of the Excavation Disturbed Zone and of the evolution with time of both mechanical and transport properties in this zone. The perturbation of the excavation may induce a significant increase of the permeability, related to diffuse and/or localised crack proliferation in the material. Fortunately self-healing properties of clays can in turn reduce the permeability with time. At this time, these processes are not well known and are only poorly investigated. The main objective of the proposed project is to understand and to quantify these processes.

Funding Scheme

CSC - Cost-sharing contracts

Coordinator

ESV EURIDICE GIE (EUROPEAN UNDERGROUND RESEARCH INFRASTRUCTURE FOR THE DISPOSAL OF WASTE IN A CLAY ENVIRONMENT)
Address
Boeretang 200
2400 Mol
Belgium

Participants (8)

CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
France
Address
Institut Natonal Polytechnique De Grenoble, Enshmg Bat E-1, Rue De La Piscine 1025
38402 Saint-martin-d'heres
GROUPEMENT D'INTÉRÊT POUR L'ETUDE DES STRUCTURES SOUTERRAINES DE STOCKAGE
France
Address
Route De Saclay, Ecole Polytechnique
91128 Palaiseau
INSTITUT NATIONAL POLYTECHNIQUE DE GRENOBLE
France
Address
Domaine Universitaire, 1023 Rue De La Piscine
38041 Grenoble
KATHOLIEKE UNIVERSITEIT LEUVEN RESEARCH AND DEVELOPMENT
Belgium
Address
Kasteelpark Arenberg 40
3001 Heverlee
NATIONAL COOPERATIVE FOR THE DISPOSAL OF RADIOACTIVE WASTE
Switzerland
Address
Hardstrasse 73
5430 Wettingen
SOLEXPERTS AG
Switzerland
Address
Schulstrasse 6
8603 Schwerzenbach
SWISS FEDERAL INSTITUTE OF TECHNOLOGY LAUSANNE
Switzerland
Address
Epfl - Ecublens
1015 Lausanne
UNIVERSITE JOSEPH FOURIER - GRENOBLE 1
France
Address
Rue De La Piscine 1023 Domaine Universitaire
38041 Grenoble