Presentations of the ALERT Workshop 2012

ALERT Workshop 2012
1st-3rd October 2012, Aussois, France

Micromechanics and critical steady states in geomaterials
Coordinators: Y. Dafalias and B. Chareyre

  • The Effect of Fibre Reinforcement on the Mechanical Behaviour of Granular Materials (O. Ajayi, J. Priest, L. Le Pen, A. Zervos)
  • Experimental Micro-Mechanics: Following sand deformation in 3D (E. Andò, G. Viggiani, S. Hall, J. Desrues, P. Besuelle)
  • Challenging the Paradigm of Critical State Soil Mechanics: Fabric Effects (Y. F. Dafalias)
  • Stress and microstructure in general 3D deviatoric straining of granular media (C. Thornton)
  • Asymptotic behaviour of granular materials investigated using discrete element model (D. Mašín)
  • Fabric evolution and geometrical interpretation of the critical state (F. Radjai, S. Roux)
  • Critical states and stress-dilatancy relations in model granular materials: DEM studies (E. Azéma, J.N. Roux, F. Radjaï)
  • Some basic questions about critical state in granular materials (B. Cambou, E. Vincens, H. Magoariec)
  • Coupling breakage and capillary effects in constitutive models for granular soils (G. Buscarnera, I. Einav)
  • From solid to granular gases: the steady state for sands (D. Vescovi, C. di Prisco, D. Berzi)
  • The effect of granular temperature on the stress measured at the steady state (E. Gerolymatou, T. Triantafyllidis, C. di Prisco)
  • A multilaminate Hvorslev surface model with non-local strain regularization (B. Schädlich, H. Schweiger)
  • Steady state of solid-grain interfaces during simulated CPT (M. Arroyo, J. Butlanska, A. Gens, C. O’Sullivan)

DAY 2, Tuesday, OCTOBER 2
Geomechanics of underground structures

Coordinators: Claudio Tamagnini and David Mašín

  • The effect of tunnel advance rate on deformations and stabilty in tunnelling (G. Anagnostou)
  • Round Robin numerical Test on Tunnels under seismic loading (E. Bilotta, F. Silvestri)
  • Centrifuge and numerical investigation of passive failure and deformation mechanisms due to tunneling in sand (K.S. Wong)
  • Application of a kinematic hardening structured soil model to undrained excavation of a tunnel in London clay (M. Arroyo, N.A. Gonzales, A. Gens, M. Rouainia)
  • Cavity expansion in cross-anisotropic linear-elastic rock (D. Kolymbas)
  • Sequential excavation of an elliptical shaft in a weathered granite (A. Topa, J. Vaunat)
  • Numerical modelling of the anisotropic mechanical behaviour of Opalinus Clay using FEM/DEM (A. Lisjak , B.S.A. Tatone, G. Grasselli, T. Vietor)
  • Anisotropic hydromechancial modelling of HGA field-scale experiment in Opalinus Clay (S. Levasseur, F. Collin, F. Bertrand, R. Charlier)
  • Numerical modelling of installation effects for diaphragm walls in sand (G. Viggiani)
  • Hydro-Mechanic coupled modelling of an experimental gallery with viscoplastic approach and permeability function of rock degradation (R. Plassart, S. Raude)
  • A modified RBSM method for simulation of stress effects on flow and transport process in fractured rocks (Yao Chi, Wanqing Shen, Qinghui Jiang, Jianfu Shao)
  • Modelling the excavation damaged zone in Callovo-Oxfordian claystone with strain localization (B. Pardoen, F. Collin, S. Levasseur, R. Charlier)
  • Flow Across Interacting Fractures (A.N. Ebrahimi, F.K.A. Wittel, N.A.M. Raújo, H.J. Herrmann)
  • Two scale modelling of hydromechanical behaviour of clayey rocks (B. van den Eijnden, P. Bésuelle, R. Chambon)

DAY 3, Wednesday, OCTOBER 3
Geomechanics for energy production
Coordinators: Lyesse Laloui and Helen Lewis

  • Analysis and investigation of the hydro-mechanical response of deformable fractures to high pressure fluid injection (C. Vinci, J. Renner, H. Steeb)
  • Testing shales in Thermo-Hydro-Mechanical conditions (L. Laloui, A. Ferrari, S. Salager)
  • Thermo-mechanical effects of a rapid depressurization in a gas cavern (H. Djakeun-Djizanne, P. Bérest, B. Brouard)
  • Numerical study of the influence of pre-existing features on the hydraulic fracturing process using FEM/DEM (G. Grasselli, A. Lisjak, B.S.A. Tatone, O.K. Mahabadi)
  • Contact mechanics problems arising in energy resources recovery
    endeavours (A.P.S. Selvadurai)
  • Thermo-Elasto-Plastic consolidation analysis with water phase change (L. Sanavia, L. Laloui, L. Luison)
  • Simultaneous determination of adsorption isotherms and heats of adsorption by a calorimetric-manometric device. Application to microporous carbon (D. Pino, F. Plantier, D. Bessières)
  • FEM numerical simulation of compaction band propagation (G. Dattola, C. di Prisco, E. Gerolymatou)
  • Advances for the design of seasonal energy storage in building foundations (F. Duprey, A. Kazangba, L. Laloui)
  • A physical model for studying the mechanical behaviour of a heat exchanger pile (N. Yavari, A.M. Tang, J.-M. Pereira, G. Hassen)
  • Issues concerning numerical modelling of geomechanical problems at the borehole and reservoir scale (E. Vargas)
  • Sand production simulation coupling DEM with CFD (N. Climent, C. O’Sullivan, M. Arroyo, A. Gens)
  • Reactivation of pre-existing fractures by fluid injection experiments at the laboratory scale (E.-M. Charalampidou, A. Reinicke, S. Stanchits, G. Dresen)
  • Characterizing the state of geomaterials at great depth. Part I: Estimation of in situ stress from borehole data (G.D. Vecchia, A. Pandolfi, G. Musso, G. Capasso)
  • Characterizing the state of geomaterials at great depth. Part II: Estimation of the representativeness of laboratory samples by comparison of in situ and laboratory elastic wave velocities (G. Musso, R.M. Cosentini, S. Foti, C. Comina, G. Capasso)
  • Evaluation of a fault zone in a carbonate hydrocarbon reservoir (E. Lecomte, C. Chalak, H. Lewis)
  • Coupling between adsorption and mechanical stress in fractured microporous geomaterials (D. N. Espinoza, J.-M. Pereira, M. Vandamme, P. Dangla)
  • Micro-hydromechanical analysis of sand production problems in small oil perforations (AN. Berntsen, E. Papamichos)

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