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12 papers · 1 filter
The influence of grain crushing and pore collapse on the formation of faults
N. A. Collins-Craft, I. Stefanou, J. Sulem +1
During an earthquake, slip occurs in a localised shear zone that features a heavily granulated fault core that can be characterised as a shear band. We study the formation of this…
Inducing tensile failure of claystone through thermal pressurization in a novel triaxial device
Philipp Braun, Pierre Delage, Siavash Ghabezloo +3
Complex coupled thermo-hydromechanical (THM) loading paths are expected to occur in clay rocks which serve as host formations for geological radioactive waste repositories. Exother…
On the scale dependence in the dynamics of frictional rupture: constant fracture energy versus size-dependent breakdown work
Federica Paglialunga, François Passelègue, Nicolas Brantut +3
Potential energy stored during the inter-seismic period by tectonic loading around faults is released during earthquakes as radiated energy, heat and fracture energy. The latter is…
Thermo-poro-elastic behaviour of a transversely isotropic shale: Thermal expansion and pressurization
Philipp Braun, Siavash Ghabezloo, Pierre Delage +2
The Callovo-Oxfordian (COx) claystone is considered as a candidate host rock for a deep geological radioactive waste repository in France. Due to the exothermic waste packages, the…
Transversely isotropic poroelastic behaviour of the Callovo-Oxfordian claystone: A set of stress-dependent parameters
Philipp Braun, Siavash Ghabezloo, Pierre Delage +2
In the framework of a deep geological radioactive waste disposal in France, the hydromechanical properties of the designated host rock, the Callovo-Oxfordian claystone (COx), are i…
On the thermal impact on the excavation damaged zone around deep radioactive waste disposal
Pierre Delage
Clays and claystones are considered in some countries (including Belgium, France and Switzerland) as a potential host rock for high activity long lived radioactive waste disposal a…