Publications de John Eichenberger

Hydro-mechanical analysis of volcanic ash slopes during rainfall

Lyesse Laloui, John Eichenberger, Alessio Ferrari, Chao Li

Rainfall-induced landslides in volcanic ashes represent a major natural hazard in many regions around the world. Due to their loose structure, volcanic ash slopes are prone to rainfall-induced landslides. The paper presents a continuum modelling approach f ...

Ice Publishing2016

Hydro-mechanical analysis of volcanic ash slopes during rainfall

Lyesse Laloui, John Eichenberger, Alessio Ferrari

Rainfall-induced landslides in volcanic ashes represent a major natural hazard in many regions around the world. Owing to their loose structure, volcanic ash slopes are prone to rainfall-induced landslides. The paper presents a continuum modelling approach ...

Ice Publishing2016

One-Dimensional Transient Analysis of Rainfall Infiltration in Unsaturated Volcanic Ash

Lyesse Laloui, John Eichenberger, Elliot James Fern, Alessio Ferrari

The paper presents a one-dimensional hydro-mechanical analysis of rainfall infiltration in a loose volcanic ash and the utilisation of a factor of safety for the implementation of an early-warning system. Three different rainy seasons with different rainfa ...

Springer-Verlag Berlin2015

Geomechanical modelling of rainfall-induced landslides in partially saturated slopes

John Eichenberger

EPFL2013

Early warning thresholds for partially saturated slopes in volcanic ashes

Lyesse Laloui, John Eichenberger, Alessio Ferrari

Rainfall-induced landslides in steep soil slopes of volcanic origin are a major threat to human lives and infrastructure. In the context of constructing early warning systems in regions where extensive data on landslide occurrences and associated rainfall ...

Elsevier2013

Hydro-mechanical behaviour of a volcanic ash

Lyesse Laloui, John Eichenberger, Alessio Ferrari

This paper presents experimental analysis and numerical modelling aimed at improved understanding and prediction of the hydro-mechanical behaviour of volcanic ash at various states of saturation. Results from a comprehensive experimental program are presen ...

Ice Publishing2013

Analyses géo-mecaniques des glissements de terrain superficiels

Lyesse Laloui, John Eichenberger, Alessio Ferrari

Societé vaudoise des Sciences naturelles2013

Experimental and numerical analysis of an unsaturated volcanic ash deposit for the establishment of an early warning system in a quarry in Costa Rica

Lyesse Laloui, John Eichenberger, Elliot James Fern, Alessio Ferrari

The paper presents the work carried out for the analysis of the hydro-mechanical behaviour of a volcanic ash in unsaturated conditions for the establishment of a landslide eary warning system (EWS) in a Costa Rican quarry. Rapid mass movements involving as ...

ASCE2012

Modeling the Onset of Shallow Landslides in Partially Saturated Slopes Subjected to Rain Infiltration

Lyesse Laloui, John Eichenberger, Mathieu Nuth

Heavy rainfall can lead to shallow slips on slopes which are often initially in a state of partial water saturation. A multiphysics approach and advanced constitutive modeling are necessary to take into account the physical key processes in partially satur ...

ASCE2011

Hydromechanically coupled analysis of transient phenomena in a rainfall-induced landslide

Lyesse Laloui, John Eichenberger, Mathieu Nuth

Heavy rainfall can lead to shallow slips in slopes that are initially in a state of partial water saturation. Multiphysics numerical modelling approaches taking into account the involved physical key processes in variably saturated soils during rainfall ev ...

International Center for Computational Engineering (IC2E)2011

Modelling of drying and cracking initiation in a gallery excavated in shale

Lyesse Laloui, John Eichenberger, Hervé Péron, Simon Salager

Damage induced by desiccation (i.e. drying shrinkage and cracking) is an issue to be investigated in deep geological nuclear waste storage engineering. A dried and cracked zone can form in the underground gallery host shale due to ventilation effects. Incr ...

CRC Press2010

Drying shrinkage and cracking initiation in clays: Main modeling concepts and application to the ventilation of a tunnel

Lyesse Laloui, John Eichenberger, Hervé Péron

Damage induced by desiccation in clays (i.e. drying shrinkage and cracking) is an issue to be investigated in geo-environmental engineering, especially when the clay is used as a confining barrier for industrial and nuclear waste storage. Dramatic increase ...

Taylor & Francis Group2010

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

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