Now showing items 21-40 of 103

    • Benchmark study of simulators for thermo-hydraulic modelling of low enthalpy geothermal processes 

      Mindel, Julian E.; Alt-Epping, Peter; Les Landes, Antoine Armandine; Beernink, Stijn; Birdsell, Daniel T.; Bloemendal, Martin; Hamm, Virginie; López, Simon; Maragna, Charles; Nielsen, Carsten M.; Olivella Pastallé, Sebastià; Perreaux, Marc; Saaltink, Maarten Willem; Saar, Martin O.; Van den Heuvel, Daniela; Vidal Montes, Rubén; Driesner, Thomas (2021-11)
      Article
      Open Access
      In order to assess the thermo-hydraulic modelling capabilities of various geothermal simulators, a comparative test suite was created, consisting of a set of cases designed with conditions relevant to the low-enthalpy range ...
    • Chemo-hydro-mechanical behaviour of compacted Boom Clay: joint effects of osmotic and matric suctions 

      Mokni, Nadia; Romero Morales, Enrique Edgar; Olivella Pastallé, Sebastià (Thomas Telford, 2014-07)
      Article
      Restricted access - publisher's policy
      An experimental programme involving osmotic and matric suction controlled tests is carried out to investigate the effects of increasing pore fluid concentration, chemical cycling (salinisation/dilution) and matric suction ...
    • Cimentaciones y estructuras de contención : problemas resueltos 

      Olivella Pastallé, Sebastià; Josa Garcia-Tornel, Alejandro; Valencia, Francisco José (Edicions UPC, 1999)
      Book
      Restricted access to the UPC academic community
      Esta publicación contiene una colección de problemas resueltos de Cimentaciones y Estructuras de Contención preparada para los estudios de Ingeniería Técnica de Obras Públicas que se imparten en la UPC. Contiene problemas ...
    • CO2 injection in deep saline sloping aquifers through a vertical well 

      Vilarrasa Riaño, Víctor; Olivella Pastallé, Sebastià; Carrera Ramírez, Jesús (2011)
      Conference report
      Open Access
    • Comparison of geosynthetic reinforced soil wall solutions using analytical design methods and numerical modelling 

      Moncada Ramírez, Aníbal Andrés; Puig Damians, Ivan; Olivella Pastallé, Sebastià; Bathurst, Richard John (2023)
      Conference report
      Restricted access - publisher's policy
      European design standard (prEN-1997 202x) permits the use of suitably verified numerical models for the design of reinforced soil walls (RSW). The paper first compares three analytical design method outcomes (Coherent ...
    • Constitutive model developments for compacted unsaturated fine grained soils based on porosimetry 

      Salgueiro, René; Olivella Pastallé, Sebastià; Suriol Castellví, Josep (Taylor & Francis, 2010)
      Conference report
      Restricted access - publisher's policy
      Modeling the mechanical behavior of compacted unsaturated soils against stress and suction changes is complex. One reason is that the structure mostly depends on the initial moisture content and compaction energy applied. ...
    • Copper canister shearing in spent nuclear fuel repository using Bodner–Partom model 

      Khadivipanah, Peiman; Pintado, Xavier; Olivella Pastallé, Sebastià; Vaunat, Jean (Elsevier, 2020-05)
      Article
      Open Access
      This paper describes the implementation of the Bodner–Partom model for the analysis of copper corrosion barrier in canisters containing spent nuclear fuel. The Bonder–Partom constitutive model implemented in CODE_BRIGHT ...
    • Coupled analysis of chemo-mechanical processes 

      Gens Solé, Antonio; Guimarães, Leonardo do N; Fernandez, A.M.; Olivella Pastallé, Sebastià; Sánchez, M. (ISTE Wiley, 2008)
      Conference report
      Restricted access - publisher's policy
    • Coupled modelling of environmental in-soil conditions and their effects over polyester straps reinforced soil structures 

      Moncada Ramírez, Aníbal Andrés; Puig Damians, Ivan; Olivella Pastallé, Sebastià; Bathurst, Richard John (2022)
      Conference lecture
      Restricted access - publisher's policy
      Polyester (PET) strap reinforcement materials are being routinely used as soil reinforcement for mechanically stabilized earth (MSE) walls. Strength and stiffness of the polyester fibres can be expected to decrease with ...
    • Coupled phenomena induced by freezing in a granular material 

      Casini, Francesca; Gens Solé, Antonio; Olivella Pastallé, Sebastià; Viggiani, Giulia M.B. (2013)
      Conference report
      Restricted access - publisher's policy
      Artificial Ground Freezing (AGF) is a controllable process that can be used by engineers to stabilise temporarily the ground, provide structural support and/or exclude groundwater from an excavation until construction of ...
    • Coupled solid-fluid response of deep tunnels excavated in saturated rock masses with a time-dependent plastic behaviour 

      Song, Fei; Rodríguez Dono, Alfonso; Olivella Pastallé, Sebastià; Gens Solé, Antonio (2021-12)
      Article
      Open Access
      This article provides a general numerical approach for modelling the response of deep tunnels excavated in saturated time-dependent plastic rock masses, considering a coupled solid-fluid interaction and time-dependent ...
    • Coupled THM modelling of engineered barriers for the final disposal of spent nuclear fuel isolation 

      Toprak, Erdem; Olivella Pastallé, Sebastià; Pintado Llurba, Xavier (London: The Geological Society, 2016-09)
      Article
      Open Access
      This paper describes the thermohydromechanical (THM) simulation of engineered barrier systems (EBS) for the final disposal of nuclear spent fuel in Finland. The bentonite barriers were simulated with the Barcelona Basic ...
    • Coupled THMC analysis in porous media 

      Gens Solé, Antonio; Guimarães, Leonardo do N; Olivella Pastallé, Sebastià (IFSTTAR, 2011)
      Conference report
      Restricted access - publisher's policy
      A coupled thermo-hydro-mechanical-chemical (THMC) formulation is presented. The formulation combines a THM approach already existing and operational with the equations of reactive transport in a fully coupled manner. The ...
    • Coupled THMC modeling of unsaturated swelling clays: constitutive formulation and boundary value problems 

      Guimarães, Leonardo do N; Gens Solé, Antonio; Sánchez, Marcelo; Olivella Pastallé, Sebastià (Taylor & Francis, 2009)
      Conference report
      Restricted access - publisher's policy
      An appropriate understanding of the interaction and effects of thermal, hydraulic, mechanical and chemical (THMC) phenomena occurring in compacted swelling clay is greatly assisted by the development and use of coupled ...
    • Development of a predictive framework for geothermal and geotechnical responses in cold regions experiencing climate change 

      Nishimura, S.; Jardine, R.; Fenton, C.H.; Olivella Pastallé, Sebastià; Gens Solé, Antonio; Martin, C.J. (2013)
      Conference report
      Restricted access - publisher's policy
      Cold regions, which are expected to suffer particularly severe future climate effects, will pose very challenging geotechnical conditions in the 21st century involving ground freezing and thawing. Given the uncertainty of ...
    • Dynamics of water vapor flux and water separation processes during evaporation from a salty dry soil 

      Gran Esforzado, Meritxell; Massana, Jordi; Carrera Ramírez, Jesús; Saaltink, Maarten Willem; Olivella Pastallé, Sebastià; Ayora Ibáñez, Carlos; Lloret Morancho, Antonio (Elsevier, 2011-01)
      Article
      Restricted access - publisher's policy
      Evaporation from a salty soil generates salt accumulation near the surface with the subsequent deterioration of the soil quality. Salinization mechanisms are poorly understood despite their global impact. Vapor flux and ...
    • Effect of thermo-coupled processes on the behaviour of a clay barrier submitted to heating and hydration 

      Sánchez, M.; Gens Solé, Antonio; Olivella Pastallé, Sebastià (2010)
      Article
      Open Access
      The storage of high level radioactive waste is still an unresolved problem of the nuclear industry, being geological disposal the most favoured option and, naturally, the one requiring the strongest geo-mechanical input. ...
    • Environmental effects on earth embankments 

      Olivella Pastallé, Sebastià; Alonso Pérez de Agreda, Eduardo (CRC Press, 2012)
      Part of book or chapter of book
      Restricted access - publisher's policy
      Two real cases: the potential effect of an induced infiltration in the vicinity of an embankment founded on potentially collapsible natural silts and the effect of rainfall regime on a canal founded on cemented collapsible ...
    • Evaluation of self-combustion risk in tire derived aggregate fills 

      Arroyo Alvarez de Toledo, Marcos; San Martin, Ignacio; Olivella Pastallé, Sebastià; Saaltink, Maarten Willem (2011-09)
      Article
      Restricted access - publisher's policy
      Lightweight tire derived aggregate (TDA) fills are a proven recycling outlet for waste tires, requiring relatively low cost waste processing and being competitively priced against other lightweight fill alternatives. However ...
    • Exploring material heterogeneity in gas flow simulation through clay materials: a numerical study 

      Sayad Noghretab, Babak; Puig Damians, Ivan; Olivella Pastallé, Sebastià; Gens Solé, Antonio (2023)
      Conference lecture
      Restricted access - publisher's policy
      This paper presents the results of the initial molding of the large-scale gas injection test 1 (Lasgit) conducted at the Äspö Hard Rock Laboratory in Sweden. Lasgit is a field test that follows the Swedish KBS-3V disposal ...