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Lyesse Laloui

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Related publications (386)

Analysis of the compaction phenomena due to the water injection in reservoirs with a three-phase geomechanical model

In the coastal regions, the land subsidence due to the industrial pumping of underground fluids such as methane is documented by the means of in situ surveys. The laboratory characterization of the gas bearing formations has also been published, which comp ...

Elsevier2010

Effect of climate change on landslide behaviour

Lyesse Laloui, John Eichenberger, Alessio Ferrari

Landslides represent a major threat to human life, constructed facilities and infrastructure in most mountainous regions of the world. Considering future climate scenarios and modified precipitation patterns, the landslide activity will most probably chang ...

2010

Non-isothermal infiltration in plastic bentonite

Lyesse Laloui, Bertrand François

In deep geological repository involving a multi-barrier system, the engineered materials, generally made of bentonite, constitute an important mechanical, thermal and hydraulic barrier to prevent the interaction between wastes and biosphere. To better unde ...

Taylor & Francis Group2010

Effect of temperature on collapse potential of kaolin clay

Lyesse Laloui, Ali Haghighi

The understanding of the fundamental behaviour of clays subjected to high temperatures is essential when working with clay barriers in nuclear waste storage, drilling of deep offshore wells or using clay liners on landfills. The effect of temperature on th ...

Taylor & Francis Group2010

Hydro-Mechanical Modelling of a Natural Slope Affected by a Multiple Slip Surface Failure Mechanism

Lyesse Laloui, Alessio Ferrari

A coupled hydro-mechanical formulation is presented for the analysis of landslide motion during crisis episodes. The mathematical formulation is used to model a natural slope affected by a multiple slip surface failure mechanism, in which pore water pressu ...

Tech Science Press2010

Investigations on water retention behaviour of deformable soils

Lyesse Laloui, Mathieu Nuth, Alessio Ferrari, Simon Salager

The trend in modern unsaturated soil mechanics is to enhance the physical understanding of the soil water retention properties. It is agreed that the retention characteristics depend on the state of compaction and are related to the deformability of the me ...

Taylor & Francis Group2010

Rainfall thresholds for shallow landslides based on a numerical analysis

Lyesse Laloui, John Eichenberger, Alessio Ferrari

Shallow landslides in Alpine regions frequently occur during heavy precipitation events or extremely fast snow melting processes. Early-warning is mostly based on simple empirical rainfall intensity and duration curves indicating probable critical climatic ...

CERG Editions2010

Anisotropic features of the mechanical behaviour of Opalinus clay

Lyesse Laloui, Mathieu Nuth, Simon Salager

The Opalinus Clay is a potential host rock for radioactive waste repositories. Triaxial tests at different load levels and directions carried out on Opalinus clay showed that the mechanical behaviour of this soft rock is anisotropic. The stiffer samples ar ...

CRC Press2010

Constitutive modeling of unsaturated aggregated soils

Lyesse Laloui, Laurent Vulliet, Azad Koliji

A coupled water retention-mechanical constitutive model for unsaturated aggregated soils is presented here. Based on the multi-scale experimental results, the model incorporates the inter-particle bonding, fabric and partial saturation effects in a single ...

2010

On the use of the generalised effective stress in the constitutive modelling of unsaturated soils

Lyesse Laloui, Mathieu Nuth

The definition of a consistent stress framework is an essential prerequisite to the constitutive modelling of unsaturated soils. It is proposed to clarify the effective stress lexicon commonly used for unsaturated soils, one of the purposes being to contri ...

2009

Special Issue on Geomechanics of Structured Materials: Foreword

Lyesse Laloui

Natural soils and rocks are usually structured at various levels starting from the scale of the particles, pores and their networks up to the field scale. The particular structure in these materials, as often represented by the combination of fabric and bo ...

2009

Reply to the discussion by G. Qu on Modelling of the combined effect of strain rate and temperature on one-dimensional compression of soils

Lyesse Laloui

2009

Editorial: Failure in multiphase geomaterials

Lyesse Laloui

The contributions assembled in the present volume proceed from the lectures of the 2009 ALERT Geomaterials School devoted to the Failure in the multiphase geomaterials. The multiphase behaviour of geomaterials used to be mainly considered from the point of ...

2009

Thermo-hydro-mechanical simulation of ATLAS in-situ large scale test in Boom Clay

Lyesse Laloui, Bertrand François

Following the need for understanding and quantifying the effect of temperature on the response of a candidate host formation for radioactive waste disposal, finite element modelling of an in-situ thermal experiment has been carried out. Based on a thermo-h ...

2009

Behaviour of an engineered clay barrier for a nuclear waste isolation system

Lyesse Laloui, Bertrand François

In a few years, safe and definitive solutions should be ready to manage large quantities of high-level radioactive waste. Deep geological repository involving a multibarrier system constitutes one of the most promising options to isolate such waste from th ...

INTERNATIONAL CENTRE FOR COMPUTATIONAL ENGINEERING (IC 2E)2009

After 10’000 years of movements, is the La Frasse landslide stabilized? Numerical modeling of the crises of a large landslide and of its mitigation measures

Lyesse Laloui, Hervé Péron, Jacques Planchat

Using advanced hydro-geological and geo-mechanical finite element simulations, it has been possible to model the behavior of a large slope movement, namely the La Frasse landslide in Switzerland. The slide experiences a permanent movement of about 10 to 15 ...

CIMNE2009

Desiccation cracking of soils

Lyesse Laloui, Hervé Péron

The scope of this paper is to present the global mechanisms of soil desiccation, including drying shrinkage and cracking. The paper first reviews the basic processes that are beneath the word “desiccation”. Then the results of an experimental study of desi ...

2009

Prediction of the spacing and patterns of drying cracks in soils

Lyesse Laloui, Hervé Péron

Desiccation cracking of soils is of great importance to geotechnical and geoenvironmental engineering as it affects the soil physical integrity. Yet the mechanisms of drying cracking in soils, and the ways to control or avoid it, are still elusive. This pa ...

International Centre for Computational Engineering2009

Explaining thermal failure in saturated clays

Lyesse Laloui, Bertrand François

Failure conditions in soils at elevated temperatures appear to be strongly dependent on the history of the application of stress and temperature. Four cases of such history leading to various modes of failure are identified and interpreted in terms of Ther ...

2009

Understanding the thermo-mechanical response of heat exchanger piles

Lyesse Laloui, Hervé Péron, Mathieu Nuth

Although the adaptation of deep foundations into heat exchangers is receiving growing attention, geothermal research is focusing mostly on energy optimization aspects. Meanwhile, the primary bearing function of the foundation must remain unaltered. Also, p ...

International Centre for Computational Engineering2009

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