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Assessment of Anisotropic Elastic Parameters Using Laboratory Triaxial and In-Situ Pressuremeter Tests in Opalinus Clay
Opalinus Clay is a stratified shale that exhibits anisotropic deformation properties. In this work, the transversely isotropic deformation parameters...
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Calibration Method and Material Constants of an Anisotropic, Linearly Elastic and Perfectly Plastic Mohr–Coulomb Constitutive Model for Opalinus Clay
Nagra, the cooperative for develo** and implementing a long-term radioactive waste depository in Switzerland, identified Opalinus Clay as the most...
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Microstructural characterization of natural fractures and faults in the Opalinus Clay: insights from a deep drilling campaign across central northern Switzerland
The Middle-Jurassic Opalinus Clay is the foreseen host rock for radioactive waste disposal in central northern Switzerland. An extensive drilling...
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Exploring Heterogeneity Consideration in Bonded Block Analyses of Laboratory and In Situ Tests on Opalinus Clay
The impact of heterogeneity on the failure of rocks has prompted researchers to perform numerical investigations. Heterogeneity can be incorporated...
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Deformation Behavior and Seismic Characteristics of Sandy Facies Opalinus Clay During Triaxial Deformation Under Dry and Wet Conditions
Unconsolidated, undrained triaxial deformation tests were performed on sandy facies Opalinus Clay at 50 MPa confining pressure to characterize the...
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Water Content Evolution in the EDZ of Opalinus Clay: A Methodic Approach for a Comparative Interpretation of Measurements and Modelling
In the Mont Terri Rock Laboratory (Switzerland), an interdisciplinary examination program is carried out to increase knowledge about coupled...
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In-situ Shear Modulus Determination by Pressuremeter Tests in Opalinus Clay and Reconciliation with Laboratory Tests
AbstractOpalinus Clay is the designated host rock for a deep geological repository of radioactive waste in Switzerland. The determination of its...
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Strain Partitioning and Frictional Behavior of Opalinus Clay During Fault Reactivation
The Opalinus Clay (OPA) formation is considered a suitable host rock candidate for nuclear waste storage. However, the sealing integrity and...
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Elastic Stiffness Modelling of Opalinus Clay Based on Laboratory Measurements with Implications for In-situ Testing
Understanding the elastic stiffness evolution of Opalinus Clay is necessary for predicting ground deformation during the construction and operation...
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Seismic anisotropy of Opalinus Clay: tomographic investigations using the infrastructure of an underground rock laboratory (URL)
Seismic anisotropy and attenuation make claystone formations difficult to characterize. On the other hand, in many geotechnical environments, precise...
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Capturing the structural and compositional variability of Opalinus Clay: constraints from multidisciplinary investigations of Mont Terri drill cores (Switzerland)
Opalinus Clay is considered a potential host rock for radioactive waste disposal. The Jurassic claystone formation is composed of several facies and...
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Modeling cesium migration through Opalinus clay: a benchmark for single- and multi-species sorption-diffusion models
Sophisticated modeling of the migration of sorbing radionuclides in compacted claystones is needed for supporting the safety analysis of deep...
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Discussion on “Experimental Deformation of Opalinus Clay at Elevated Temperature and Pressure Conditions: Mechanical Properties and the Influence of Rock Fabric” of Schuster, V., Rybacki, E., Bonnelye, A., Herrmann, J., Schleicher, A.M., Dresen, G.
The testing procedure and results on saturated samples of Opalinus Clay in the work of Schuster et al. (Rock Mech Rock Eng
https://doi.org/10.1007/s00603-021-02474-3... -
Experimental Deformation of Opalinus Clay at Elevated Temperature and Pressure Conditions: Mechanical Properties and the Influence of Rock Fabric
The mechanical behavior of the sandy facies of Opalinus Clay (OPA) was investigated in 42 triaxial tests performed on dry samples at unconsolidated,...
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Experimental Investigations on Hydro-mechanical Processes in Reconstituted Clay Shale and Their Significance for Constitutive Modelling
The hydro-mechanical processes of a reconstituted clay shale (Opalinus Clay) were studied and implications for constitutive modelling of swellable...
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HYDROTHERMAL INTERACTION OF WYOMING BENTONITE AND OPALINUS CLAY
Most investigations into clay-mineral stability and new mineral formation within engineered barrier system (EBS) materials for geologic repositories...
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Effect of CO2-H2O-Smectite Interactions on Permeability of Clay-Rich Rocks Under CO2 Storage Conditions
CO 2 uptake by smectites can cause swelling and self-stressing in shallow clay-rich caprocks under CO 2 storage P–T and constrained conditions....
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Self-healing of Fractures around Radioactive Waste Disposal in Clay Formations
The feasibility of storing radioactive waste in low permeable clays is studied extensively nowadays. Fracturing and healing of fractures is of great...