On boundary condition in tunnels under partial saturation

[en] A new hydraulic boundary condition modelling the hydraulic transfers between porous medium and ambient atmosphere occurring during gallery excavations is described. It combines two modes of water exchanges in partial saturation: seepage and evaporation flows. Numerical simulations of a gallery excavation in dilatant geomaterial are carried out in isothermal conditions. The results show the influence of hydric boundary condition on the convergence of the gallery and the importance of the determination of vapour transfer coeffi-cient between atmosphere and porous medium.

Disciplines :

Civil engineering

Author, co-author :

Gerard, Pierre ; Université de Liège - ULiège > Département Argenco : Secteur GEO3 > Mécanique des sols et des roches & infrastructures - Géomécanique et géologie de l'ingénieur

Charlier, Robert ; Université de Liège - ULiège > Département Argenco : Secteur GEO3 > Géomécanique et géologie de l'ingénieur

Collin, Frédéric ; Université de Liège - ULiège > Département Argenco : Secteur GEO3 > Géomécanique et géologie de l'ingénieur

Language :

English

Title :

On boundary condition in tunnels under partial saturation

Publication date :

2008

Event name :

1st European Conference on Unsaturated Soils (E-UNSAT 2008)

Event place :

Durham, United Kingdom

Event date :

2 - 4 July 2008

Audience :

International

Main work title :

Unsaturated Soils: Advances in Geo-Engineering

Editor :

Toll, David

Publisher :

Taylor & Francis, London, United Kingdom

ISBN/EAN :

978-0-415-47692-8

Pages :

779-784

Peer reviewed :

Peer reviewed

Name of the research project :

Projet Européen TIMODAZ

Funders :

F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]

Available on ORBi :

since 20 August 2008

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Bibliography

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