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    • Impacts of cold CO2 injection in deep saline aquifers on the rock mechanical integrity. 

      Vilarrasa Riaño, Víctor; Carrera Ramírez, Jesús; SILVA, ORLANDO; Olivella Pastallé, Sebastià (2013)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Injecting CO2 into aquifers at depths greater than 800 m brings CO2 to a supercritical state where its density is large enough to ensure an efficient use of pore space. However, CO2 may not be in thermal equilibrium with ...

    • Induced seismicity in geologic carbon storage 

      Vilarrasa Riaño, Víctor; Carrera Ramírez, Jesús; Olivella Pastallé, Sebastià; Rutqvist, Jonny; Laloui, Lyesse (2019-06)
      Article
      Accés obert
      Geologic carbon storage, as well as other geo-energy applications, such as geothermal energy, seasonal natural gas storage and subsurface energy storage imply fluid injection and/or extraction that causes changes in rock ...

    • Influence of numerical model mesh properties on predicted in soil temperature, relative humidity and degree of saturation of reinforced soil structures 

      Moncada Ramírez, Aníbal Andrés; Puig Damians, Ivan; Olivella Pastallé, Sebastià; Bathurst, Richard (2022)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      Geosynthetic materials are routinely used in soil reinforcement and stabilization applications. They have proven to be an important part of the sustainable solution for reinforced soil walls (RSWs). For RSW constructed ...

    • Influence of suction on the mechanical behaviour of rock joints under shear loading 

      Zandarín, Maria Teresa; Alonso Pérez de Agreda, Eduardo; Olivella Pastallé, Sebastià (Taylor & Francis, 2010)
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      A direct shear equipment was modified for testing rock joints with suction control. Modification includes a vapour forced convection circuit connected to the air chamber of shear cell for controlling relative humidity ...

    • Is the degree of saturation a good candidate for Bishop’s X parameter? 

      Pereira, J.M.; Coussy, Olivier; Alonso Pérez de Agreda, Eduardo; Vaunat, Jean; Olivella Pastallé, Sebastià (CRC Press, 2011)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      In unsaturated soil mechanics, the quest for an effective stress playing the same role as Terzaghi’s effective stress does for saturated soils has introduced a long standing debate, dating back to the 1960s. Several ...

    • Lechago dam. A case study 

      Alonso Pérez de Agreda, Eduardo; Olivella Pastallé, Sebastià; Pinyol Puigmartí, Núria Mercè (Universitat Politècnica de Catalunya. Escola Tècnica Superior d'Enginyers de Camins Canals i Ports de Barcelona, 2011-11-15)
      Comunicació de congrés
      Accés obert
      Lechago dam (Teruel, Spain) is a 40 m high zoned earth and rockfill dam sitting on soft continental deltaic deposits. A relatively narrow central clay core is stabilized by wide rockfill shoulders. The dam was well ...

    • Lechago dam: a case study 

      Alonso Pérez de Agreda, Eduardo; Olivella Pastallé, Sebastià; Pinyol Puigmartí, Núria Mercè (2011)
      Text en actes de congrés
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      Lechago dam (Teruel, Spain) is a 40 m high zoned earth and rockfill dam founded on soft continental deltaic deposits. A relatively narrow central clay core is stabilized by wide rockfill shoulders. The dam was completed ...

    • Mecánica de suelos : problemas resueltos 

      Olivella Pastallé, Sebastià; Josa Garcia-Tornel, Alejandro; Suriol Castellví, Josep; Navarro Gámir, Vicente (Edicions UPC, 1997)
      Llibre
      Accés restringit a la comunitat UPC
      Esta publicación contiene una colección de problemas resueltos de mecánica de suelos que ha sido preparada para los estudios de ingeniería técnica de obras públicas que se imparten en la UPC. Se trata de una titulación de ...

    • Mecánica de suelos : problemas resueltos 

      Olivella Pastallé, Sebastià; Josa Garcia-Tornel, Alejandro; Suriol Castellví, Josep; Navarro Gámir, Vicente (Edicions UPC, 2001)
      Llibre
      Accés restringit a la comunitat UPC
      Esta publicación contiene una colección de problemas resueltos de mecánica de suelos que ha sido preparada para los estudios de ingeniería técnica de obras públicas que se imparten en la UPC. Se trata de una titulación de ...

    • Mechanisms of gas transport in clay barriers 

      Alonso Pérez de Agreda, Eduardo; Olivella Pastallé, Sebastià; Arnedo Gaute, Diego (Universidad Complutense de Madrid, 2006)
      Article
      Accés obert
      Laboratory experiments show that preferential paths develop through saturated impervious clay bodies. A procedure to integrate gas transmission discontinuities into a general THM formulation is described. The technique has ...

    • Microstructural and hydro-mechanical behaviour of bentonite pellets and powder mixtures 

      Mesa Alcantara, Arisleidy; Romero Morales, Enrique Edgar; Mokni, Nadia; Olivella Pastallé, Sebastià (EDP Sciences, 2020-10)
      Article
      Accés obert
      Binary mixtures of high-density MX-80 bentonite pellets (80%) and bentonite powder (20%) at hygroscopic water content have been recently considered as an alternative engineered barrier system for the long-term disposal of ...

    • Modelación numérica de túneles excavados en rocas sulfatadas 

      Ramon Tarragona, Anna; Alonso Pérez de Agreda, Eduardo; Olivella Pastallé, Sebastià (2017-09)
      Article
      Accés restringit per política de l'editorial
      Las expansiones ocurridas en el túnel de Lilla son el resultado del crecimiento de cristales de yeso en discontinuidades. Se describe un procedimiento de análisis numérico para el diseño de un túnel en roca anhidrítica ...

    • Modeling evaporation processes in a saline soil from saturation to oven dry conditions 

      Gran Esforzado, Meritxell; Carrera Ramírez, Jesús; Olivella Pastallé, Sebastià; Saaltink, Maarten Willem (2011)
      Article
      Accés obert
      Thermal, suction and osmotic gradients interact during evaporation from a salty soil. Vapor fluxes become the main water flow mechanism under very dry conditions. A coupled nonisothermal multiphase flow and a reactive ...

    • Modeling soil-facing interface interaction with continuum element methodology 

      Puig Damians, Ivan; Olivella Pastallé, Sebastià; Bathurst, Richard; Lloret Morancho, Antonio; Josa Garcia-Tornel, Alejandro (2022-03)
      Article
      Accés obert
      Soil-facing mechanical interactions play an important role in the behaviour of earth retaining walls. Generally, numerical analysis of earth retaining structures requires the use of interface elements between dissimilar ...

    • Modelización del comportamiento de bandas poliméricas de refuerzo en suelos bajo el efecto de la temperatura y humedad 

      Moncada Ramírez, Aníbal Andrés; Olivella Pastallé, Sebastià; Puig Damians, Ivan; Bathurst, Richard (Sociedad Española de Mecánica del Suelo e Ingeniería Geotécnica, 2022)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      Los materiales de refuerzo de bandas de poliéster (PET) se utilizan actualmente de forma rutinaria como refuerzo del suelo para los estructuras de contención de suelo reforzado. Es de esperar que la resistencia y la rigidez ...

    • Modelling 3D mechanical interfaces with continuum elements 

      Puig Damians, Ivan; Olivella Pastallé, Sebastià; Lloret Morancho, Antonio; Josa Garcia-Tornel, Alejandro; Bathurst, Richard (2013)
      Text en actes de congrés
      Accés obert
      This document presents preliminary results of FEM-numerical analysis of soil-reinforcement pullout tests. The numerical model has been developed with CODE_BRIGHT and assuming the interfaces as continuum materials. The ...

    • Modelling a gas flow experiment in Mx80 bentonite 

      Puig Damians, Ivan; Olivella Pastallé, Sebastià; Gens Solé, Antonio (International Society for Soil Mechanics and Geotechnical Engineering (ISSMGE), 2019)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      A gas injection test performed on compact bentonite was carried out at the British Geological Survey. The test is composed of two stages (i.e. hydration followed by gas injection). After gas breakthrough and a period of ...

    • Modelling advective gas flow in compact bentonite: lessons learnt from different numerical approaches 

      Tamayo Mas, Elena; Harrington, J. F.; Brüning, T.; Shao, H.; Dagher, E. E.; Lee, Jaewon; Kim, K.; Rutqvist, Jonny; Kolditz, Olaf; Lai, S. H.; Chittenden, C.; Wang, Y.; Puig Damians, Ivan; Olivella Pastallé, Sebastià (Elsevier, 2021-03)
      Article
      Accés obert
      In a repository for radioactive waste hosted in a clay formation, hydrogen and other gases may be generated due to the corrosion of metallic materials under anoxic conditions, the radioactive decay of waste and the ...

    • Modelling engineered barriers for spent nuclear fuel repository using a double-structure model for pellets 

      Toprak, Erdem; Olivella Pastallé, Sebastià; Pintado, Xavier (2020-02)
      Article
      Accés obert
      This paper describes an experimental programme and the corresponding modelling in order to characterise the hydromechanical (HM) behaviour of pellets. At least two levels of porosity can be distinguished in the pellets: ...

    • Modelling fluid flow in opalinus clay excavation damage zone: a semi-analytical approach 

      Alcoverro Bassols, Jordi; Olivella Pastallé, Sebastià; Alonso Pérez de Agreda, Eduardo (2014-12)
      Article
      Accés restringit per política de l'editorial
      The HG-A in situ test, located at the Mont Terri Underground Rock Laboratory (URL), was analysed as part of the FORGE project. This test investigated the behaviour of the excavation damage zone (EDZ) around a backfilled ...