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Ara es mostren els items 28-47 de 77

    • Fast planar slides. A closed form thermo-hydro-mechanical solution 

      Pinyol Puigmartí, Núria Mercè; Alonso Pérez de Agreda, Eduardo (2010)
      Article
      Accés restringit per acord de confidencialitat
      Heat-induced eccess pore pressures on the failure surface of a planar slide have been calculated by solving the mass and heat balance equations on the shear band. The set of differential equations and the equation of ...

    • Foundation of a gravity dam on layered soft rock: shear strength of bedding planes in laboratory and large "in situ" tests 

      Alonso Pérez de Agreda, Eduardo; Pinyol Puigmartí, Núria Mercè; Pineda Jiménez, Jubert Andrés (2014-12)
      Article
      Accés restringit per política de l'editorial
      A 100 m high gravity dam (Castrovido dam, Burgos, Spain) is founded on a soft Weald red claystone with inter-bedded sandstone strata. Claystone weathering was identified in vertical and horizontal profiles of water content ...

    • Foundation of a gravity dam on layered soft rock: shear strength of bedding planes in laboratory and large “in situ” tests 

      Alonso Pérez de Agreda, Eduardo; Pinyol Puigmartí, Núria Mercè; Pineda, Jubert Edgar (IOS Press, 2011)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      A 100 m high gravity dam (Castrovido dam, Burgos, Spain) is founded on a soft Weald red siltstone with interbedded sandstone strata. Dam stability is essentially controlled by the available shear strength of sedimentation ...

    • Highly expansive granular mixtures 

      Alonso Pérez de Agreda, Eduardo; Pinyol Puigmartí, Núria Mercè; Hoffmann Jauge, Christian (CRC Press, 2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The paper describes the behavior of mixtures of highly compacted bentonite pellets. They are considered as a suitable impervious and tight barrier for nuclear waste disposal. Laboratory experiments aimed at identifying the ...

    • Image-based measurements of degree of saturation 

      Parera Morales, Ferran; Pinyol Puigmartí, Núria Mercè; Alonso Pérez de Agreda, Eduardo (E3S Web of Conferences, 2020)
      Text en actes de congrés
      Accés obert
      A method based on SWIR images is proposed for measuring the degree of saturation in soils. This method is especially suitable for use in experiments conducted in the facilities of a common geotechnical laboratory. The ...

    • Incorporating a microstructural state variable in constitutive modelling 

      Pinyol Puigmartí, Núria Mercè; Alonso Pérez de Agreda, Eduardo; Gens Solé, Antonio (2013)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The selection of constitutive variables has been extensively discussed when modeling unsaturated soils. In general, suction and degree of saturation have been involved in the definition of constitutive variables. Recently, ...

    • Influence of temperature on residual strength of clayey soils 

      García Núñez, Luis Miguel; Pinyol Puigmartí, Núria Mercè; Lloret Morancho, Antonio; Soncco Halanocca, Edwin Aristides (Elsevier, 2023-09)
      Article
      Accés obert
      This paper presents the influence of temperature on the residual strength by analyzing shearing tests carried out in a temperature- and velocity-controlled ring shear apparatus. Temperature was applied in steps of cooling ...

    • Influencia del desembalse en la estabilidad de una ladera: caso real 

      Pinyol Puigmartí, Núria Mercè; Alonso Pérez de Agreda, Eduardo; Corominas Dulcet, Jordi; Moya Sánchez, José (2013)
      Text en actes de congrés
      Accés obert
      Un aspecto crítico a controlar en la gestión de embalses es la velocidad de descenso de nivel de agua debido al riesgo de inestabilidades en las laderas que lo forman. Este artículo presenta el estudio realizado para conocer ...

    • Internal progressive failure in deep-seated landslides 

      Yerro Colom, Alba; Pinyol Puigmartí, Núria Mercè; Alonso Pérez de Agreda, Eduardo (2015-11)
      Article
      Accés obert
      Except for simple sliding motions, the stability of a slope does not depend only on the resistance of the basal failure surface. It is affected by the internal distortion of the moving mass, which plays an important role ...

    • Introduction: advances in landslide understanding 

      Alonso Pérez de Agreda, Eduardo; Pinyol Puigmartí, Núria Mercè (2019-09)
      Article
      Accés obert
      Landslide research covers an extremely wide range of aspects: from triggering mechanisms to response of the unstable mass after failure, including transport, deposition, and interaction with protective structures. Advances ...

    • Landslide motion assessment including rate effects and thermal interactions: revisiting the Canelles landslide 

      Alvarado Bueno, Mauricio; Pinyol Puigmartí, Núria Mercè; Alonso Pérez de Agreda, Eduardo (2019-09)
      Article
      Accés obert
      The re-activation of a large (40 Mm3) landslide on the valley slopes of a reservoir motivated a research initiative to estimate the risk of a fast-sliding mass moving into the reservoir. A previous simplified analysis had ...

    • Landslides in reservoirs and dam operation 

      Alonso Pérez de Agreda, Eduardo; Pinyol Puigmartí, Núria Mercè (CRC Press, 2011)
      Capítol de llibre
      Accés restringit per política de l'editorial
      Risk of landslide ocurrence in reservoirs is enhanced by the submergence of the slope toe and by rapid drawdown conditions. Instabilities may endanger the dam itself. They may also lead to strong wave motion in the reservoir ...

    • Landslides in reservoirs: a coupled thermo-hydromechanical approach 

      Pinyol Puigmartí, Núria Mercè (Universitat Politècnica de Catalunya, 2010-09-13)
      Tesi
      Accés obert
      La ocurrencia de deslizamientos es uno de los principales problemas presentes durante el diseño, construcción y explotación de presas y embalses. La inundación del pie de los taludes, así como el desembalse rápido, pueden ...

    • 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
      Accés restringit per política de l'editorial
      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 ...

    • Liquefaction-induced flow-like landslides: the case of Valarties (Spain) 

      Carluccio, Gaia di; Pinyol Puigmartí, Núria Mercè; Alonso Pérez de Agreda, Eduardo; Hurlimann Ziegler, Marcel (2023-01)
      Article
      Accés obert
      This paper examines a flowslide involving a glacial deposit of low-plasticity silty sand triggered by a karstic spring after a rainfall period. The work aims at explaining the triggering, propagation and kinematics of ...

    • Massive, continuous and non-invasive surface measurement of degree of saturation by shortwave infrared images 

      Parera Morales, Ferran; Pinyol Puigmartí, Núria Mercè; Alonso Pérez de Agreda, Eduardo (2021-06)
      Article
      Accés obert
      Short wave infrared (SWIR) images provide an accurate procedure to measure the degree of saturation (Sr) of soils. Changes in Sr result in reflectance changes which were recorded by a special digital camera optimized for ...

    • Mathematical modelling of slopes 

      Alonso Pérez de Agreda, Eduardo; Pinyol Puigmartí, Núria Mercè; Yerro Colom, Alba (Elsevier, 2014)
      Article
      Accés obert
      The paper discusses first the effect of rainfall on the stability of slopes and it focusses on the role of permeability. Existing or induced discontinuities are shown to have a remarkable effect on the slope safety. Also, ...

    • Mecanismos que controlan la velocidad de los deslizamientos 

      Pinyol Puigmartí, Núria Mercè; Scoppettuolo, M.E.; Alonso Pérez de Agreda, Eduardo (International Centre for Numerical Methods in Engineering (CIMNE), 2017)
      Comunicació de congrés
      Accés obert
      Los deslizamientos activos a menudo mantienen velocidades lentas o moderadas (del orden de mm/día o cm/día) durante un largo periodo de tiempo. Las variaciones de la velocidad están relacionadas con los cambios en las ...

    • Microstructure of compacted low-plasticity soils: the initial fabric and its evolution on stress and suction paths 

      González Blanco, Laura; Romero Morales, Enrique Edgar; Pinyol Puigmartí, Núria Mercè; Alonso Pérez de Agreda, Eduardo (EDP Sciences, 2023)
      Article
      Accés obert
      Soils used in earthworks undergo different hydro-mechanical paths due to the compaction and construction process, the change in climatic conditions or the groundwater level oscillations. Their hydro- mechanical behaviour ...