A5114376279- Rock Mechanics and Modeling
- Soil and Unsaturated Flow
- Geotechnical Engineering and Analysis
- Grouting, Rheology, and Soil Mechanics
- Geotechnical Engineering and Soil Mechanics
- Dam Engineering and Safety
- Numerical methods in engineering
- Groundwater flow and contamination studies
- Drilling and Well Engineering
- Landslides and related hazards
- Geotechnical and Geomechanical Engineering
- Geotechnical Engineering and Underground Structures
- Hydraulic Fracturing and Reservoir Analysis
- Geological Modeling and Analysis
- Geotechnical and construction materials studies
- Geotechnical Engineering and Soil Stabilization
- Nonlocal and gradient elasticity in micro/nano structures
- Geothermal Energy Systems and Applications
- Composite Material Mechanics
- Soil Moisture and Remote Sensing
- Tunneling and Rock Mechanics
- Heat and Mass Transfer in Porous Media
- Geophysical and Geoelectrical Methods
- Concrete and Cement Materials Research
- High-Velocity Impact and Material Behavior
Nationale Instelling voor Radioactief Aval en verijkte Splijtstoffen
2015-2023
Material (Belgium)
2021-2022
University of Liège
2007-2020
Fund for Scientific Research
2009-2014
Fonds National de la Recherche
2009-2012
Université Joseph Fourier
2004-2009
Centre National de la Recherche Scientifique
2002-2009
Sols, Solides, Structures, Risques
2005-2007
Université Grenoble Alpes
2004-2007
Laboratoire des Écoulements Géophysiques et Industriels
2005-2006
Abstract This paper is dedicated to the identification of constitutive parameters Mohr–Coulomb model from in situ geotechnical measurements. A pressuremeter curve and horizontal displacements a sheet pile wall retaining an excavation are successively used as Two kinds optimization algorithms minimize error function, first one based on gradient method second genetic algorithm. The efficiency each algorithm related function topology discussed. Finally, it shown that use identify soil seems...
Most safety cases for radioactive waste disposal concepts consider a temperature limit of 90°C in the clay host rock. Being able to tolerate higher would have significant advantages. For this reason, part EURAD-HITEC project aimed at determining influence above on rock properties, trying establish possible extent elevated damage near and far field formations consequences any such damage. Three considered repositories Europe were focus studies: Boom Clay, Callovo-Oxfordian claystone Opalinus...
Abstract This paper investigates, within a multi-scale perspective, the gas transport and self-sealing processes in plastic low-permeability materials, which is crucial for managing deep geological disposal of radioactive waste. Laboratory injection tests revealed that, even at pressures lower than minor principal stress, flowed through material, inducing stress-dependant pathways that enhanced permeability. However, mechanisms, particularly clay mineral swelling during re-saturation,...
Abstract This study concerns the identification of constitutive models from geotechnical measurements by inverse analysis. Soil parameters are identified measured horizontal displacements sheet pile walls and a pressuremeter curve. An optimization method based on genetic algorithm (GA) principal component analysis (PCA), developed tested synthetic data in previous paper, is applied. These applications show that conclusions deduced problems can be extrapolated to real problems. The GA robust...
Abstract This study concerns the identification of parameters soil constitutive models from geotechnical measurements by inverse analysis. To deal with non‐uniqueness solution, analysis is based on a genetic algorithm (GA) optimization process. For given uncertainty measurements, GA identifies set solutions. A statistical method principal component (PCA) is, then, proposed to evaluate representativeness this set. It shown that controlled population size for which an optimal value can be...
Abstract Demonstrating the feasibility of constructing tunnels in deep clay formations is an important goal Belgian RD&D programme on geological disposal radioactive waste. In 2002 a major achievement was reached when HADES Underground Research Laboratory (URL) Boom Clay extended with construction Connecting Gallery. This demonstrated that it feasible to construct galleries poorly indurated clays using industrial techniques. To monitor mechanical behaviour gallery and assess its...
In many countries, the preferred option for long-term management of high- and intermediate level radioactive waste spent fuel is final disposal in a geological repository. this repository, generation gas will be unavoidable. order to make correct balance between dissipation by diffusion, knowledge diffusion coefficients gases host rock engineered barriers essential. Currently, Boom Clay, potential Belgian rock, are available, but concrete still lacking. Therefore, experiments with dissolved...
Abstract During recent decades, argillaceous sedimentary formations have been studied as potential host for the geological disposal of long-living and heat-emitting radioactive waste—Boom Clay in Belgium Opalinus Brown Dogger Switzerland. A significant issue long-term performance these rocks concerns generation transport gases. The pressure resulting from gas an almost impermeable medium near field a repository will increase. Under high pressures, mechanical hydraulic properties rock are...
Drying-induced shrinkage of geomaterials may have a strong effect on geostructure stability and deformation. The settlement foundations fracture openings in slopes, roads, tunnel walls be due to drying shrinkage. However, there is still lack knowledge concerning evolution with time propagation within the material. In this study, specific clayey rock — Boom clay under conditions investigated experimentally. This deep geological formation, which study for high-level long-term radioactive waste...
Abstract In the geological disposal of high-level radioactive waste in argillaceous rocks, studying barrier integrity after gas transport and pathway closure thanks to self-sealing capacity is a crucial aspect for safety assessment. This paper presents experimental research Boom Clay (a potential host rock Belgium) evaluate effectiveness possible fissure reactivation during second invasion event. Initial water permeability under oedometer conditions was first measured on samples at two...
Deep geological disposal aims to contain and isolate radioactive waste from the biosphere. Repository systems are made of multiple barriers working together, typically comprising natural barrier provided by repository host rock its surroundings an engineered system. Due their excellent properties for confinement contaminants, including low permeability, high sorption capacity, swelling/self-sealing clayey materials considered as and/or in most designs under development Europe. During...