Publications de Lyesse Laloui | EPFL Graph Search

Hydro-mechanical insights for radioactive waste disposal from gas injection experiments in shale

Lyesse Laloui, Alessio Ferrari, Qazim Llabjani

Disposal of radioactive waste in deep geological repositories relies on the integrity of geological barriers, where gas migration can compromise long-term safety. This study examines the hydro-mechanical response of a shale under varying gas pressure build ...

2025

Sealing Response of Pre-Fissured Opalinus Clay to CO₂ Injection

Lyesse Laloui, Eleni Stavropoulou

Fissures can have a significant impact on caprock integrity in the context of carbon capture and storage (CCS). In this campaign, the sealing capacity of a pre-fissured caprock material, the Opalinus Clay shale, is studied with real time x-ray imaging duri ...

Institute of Physics2025

Comparative Study of Gas Testing Protocols in Clayey Rocks for Nuclear Waste Repositories

Lyesse Laloui, Alessio Ferrari, Qazim Llabjani

Understanding gas transport processes in clay barriers is crucial for assessing the long-term safety of geological repositories for radioactive waste. Fundamental and well-designed experimental research at the laboratory scale is an indispensable prerequis ...

EMERALD GROUP PUBLISHING LTD2025

Evaluating the geothermal potential of a metro station considering its airflow conditions

Lyesse Laloui, Elena Ravera, Sofie Elaine ten Bosch

This study examines the influence of the internal air environment on the geothermal potential of a metro station in Bucharest with a standard design commonly found in metro stations. It addresses the challenges posed by factors such as train movement on ai ...

2025

Impact of Water Saturation on the Anisotropic Elastic Moduli of a Gas Shale

Lyesse Laloui, Alessio Ferrari, Jinwoo Kim

How water saturation affects elastic properties is particularly important for analyses of gas shales in unconventional reservoirs, but experimental data in defined partially saturated conditions are rare. We show that the elastic moduli of a gas shale vary ...

SPRINGER WIEN2025

Water retention behavior of a gas shale: Wettability-controlled water saturation and anisotropic hydromechanical response

Lyesse Laloui, Alessio Ferrari, Jinwoo Kim

Gas shales are fine-grained, organic-rich sedimentary geomaterials with ultra-low permeability requiring hydraulic stimulation for gas extraction. Characterizing their water retention behavior is critical for predicting hydromechanical behavior and fluid f ...

2025

An engineering elastoplastic anisotropic model applied to the modelling of deep tunnelling in Opalinus Clay

Lyesse Laloui

This paper introduces the Enhanced Anisotropic Damage Plasticity (eADP) model, a novel engineering constitutive approach tailored for tunnel analyses in Opalinus Clay – the designated host rock for the Swiss radioactive waste repository. The model's key in ...

2025

Geomechanical characterization of a shale for site selection of a deep geological repository

Lyesse Laloui, Alessio Ferrari

A large exploration campaign was executed for the final phase of the Swiss site selection program for a deep geological repository of radioactive waste. Nine boreholes were drilled, penetrating the 100 to 120 m thick Opalinus Clay shale host rock at depths ...

ARMA2025

A bio-chemo-hydro-mechanical model of transport, strength and deformation for bio-cementation applications

Lyesse Laloui, Dimitrios Terzis

Bio-cementation through microbially induced calcite precipitation (MICP) has the potential to overcome several technical and environmental limitations of conventional cement-based soil improvement techniques. While a significant amount of research has been ...

Springer Heidelberg2024

Performance of energy piles foundation in hot-dominated climate: A case study in Dubai

Lyesse Laloui, Elena Ravera, Sofie Elaine ten Bosch

Energy piles represent an innovative technology that can help provide sustainable geothermal heating or cooling energy for thermal conditioning purposes. In hot-dominated climates, the interest is to inject heat in the ground and extract energy for space-c ...

Pergamon-Elsevier Science Ltd2024