Now showing items 1-20 of 60

    • A methodology to obtain the block size distribution of a large rockfall deposit 

      Ruiz Carulla, Roger; Corominas Dulcet, Jordi; Mavrouli, Olga Christina (2014)
      Conference lecture
      Restricted access - publisher's policy
      The block size distribution produced in a rockfall event is necessary for the study of the trajectories, run-out, the impact energies and for the quantitative assessment of the rockfall hazard. For large rockfall deposits, ...
    • A study of the effects of suction and roughness on the mechanical behaviour of rock joints 

      Zandarín, Maria Teresa; Alonso Pérez de Agreda, Eduardo; Olivella Pastallé, Sebastià (2011)
      Conference report
      Restricted access - publisher's policy
      The experimental investigation focused on the effects of suction on the mechanical behaviour of rock joints. Available experimental data on the effect of moisture on joint behaviour is very scarce. Laboratory tests were ...
    • A textural classification of argillaceous rocks and their durability 

      Corominas Dulcet, Jordi; Martínez Bofill, Joan; Soler Gil, Albert (2015-08)
      Article
      Open Access
      Argillaceous rocks can display a wide range of durability behavior after excavation and in cut slopes. In this paper, we propose a classification of argillaceous rocks based on their textural characteristics. Three main ...
    • A time-dependent anisotropic model for argillaceous rocks: application to an underground excavation in Callovo-Oxfordian claystone 

      Mánica Malcom, Miguel Ángel; Gens Solé, Antonio; Vaunat, Jean; Ruiz Restrepo, Daniel Felipe (2017-05)
      Article
      Open Access
      The paper presents a constitutive model for argillaceous rocks, developed within the framework of elastoplasticity, that includes a number of features that are relevant for a satisfactory description of their hydromechanical ...
    • Air tests on low-permeability claystone formations: experimental results and simulations 

      Romero Morales, Enrique Edgar; Senger, R.K.; Marschall, P; Gómez Bonilla, Rodrigo Andrés (Springer, 2012)
      Conference report
      Restricted access - publisher's policy
      The paper presents the results of an experimental investigation aimed at characterising the water and air permeability properties of low-permeability claystone formations from a Mesozoic sequence in Northern Switzerland. ...
    • Analysis of rockfalls by means of a fractal fragmentation model 

      Ruiz Carulla, Roger; Corominas Dulcet, Jordi (2020-03)
      Article
      Open Access
      We present the performance of the rockfall fractal fragmentation model (RFFM) developed by Ruiz-Carulla et al. (Landslides 14(3):875–889. doi.org/10.1007/s10346-016-0773-8, 2017) and based on Perfect (Eng Geol 48:185–198, ...
    • Análisis retrospectivo usando un criterio de máxima verosimilitud (I) 

      Ledesma Villalba, Alberto; Gens Solé, Antonio; Alonso Pérez de Agreda, Eduardo (1990)
      Article
      Open Access
      El artículo presenta una formulación probabilística del problema del análisis retrospectivo, basado en un criterio de máxima verosimilitud. La formulación está organizada de forma jerárquica, de manera que se pueden ...
    • Análisis simplificado de la mecánica de impacto de bloques rocosos sobre sustrato rígido y su aplicación a casos de ensayos de lanzamiento 

      Lekuona Garcia, Beñat (Universitat Politècnica de Catalunya, 2018-09-28)
      Master thesis
      Open Access
      Covenantee:   Geomar Enginyeria del Terreny
      Los bloques desprendidos de paredes rocosas suelen fragmentarse al colisionar con un sustrato rígido. Experiencias previas de ensayos de lanzamiento de bloques sugieren que la geometría del impacto puede jugar un papel muy ...
    • Application of zero-thickness interface elements to sanding prediction analysis 

      Garolera Vinent, Daniel; Carol, Ignacio; Papanastasiou, Panos (2020-07)
      Article
      Restricted access - publisher's policy
      A computational micromechanical analysis based on zero thickness interface elements for modelling solid prediction in hydrocarbon reservoir sandstones is presented. The model is capable of modelling localization of ...
    • Caracterització geotècnica Mina Berta (Vallès Occidental) 

      Díaz Badia, Carles (Universitat Politècnica de Catalunya, 2011-06)
      Master thesis (pre-Bologna period)
      Open Access
      Aquest estudi analitza la problemàtica que genera la reconversió d’una pedrera en un abocador de residus especial, concretament als peus de Collserola en els terrenys que ara ocupa la pedrera de Mina Berta situada al Vallès ...
    • Changes in hydrodynamic, structural and geochemical properties in carbonate rock samples due to reactive transport 

      Martínez Pérez, Laura; Luquot, Linda; Carrera Ramírez, Jesús (Elsevier, 2017-01)
      Article
      Open Access
      Reactive transport plays an important role in the development of a wide range of both anthropic and natural processes affecting geological media. To predict the consequences of reactive transport processes on structural ...
    • Comparing kinematically detachable rock masses and rockfall scar volumes 

      Mavrouli, Olga Christina; Corominas Dulcet, Jordi (Institute of Physics (IOP), 2015)
      Conference report
      Open Access
      In rockfall prone areas the evaluation of the risk due to worst case scenarios requires the establishment of maximum thresholds for the expected rockfall volumes. The magnitude of such instabilities is often related to ...
    • Comparison of block size distribution in rockfalls 

      Ruiz Planas, Montserrat; Corominas Dulcet, Jordi; Mavrouli, Olga Christina (2015)
      Conference lecture
      Restricted access - publisher's policy
      Rock masses detached as rockfalls usually disintegrate upon impact on the ground surface. The knowledge of the Rockfall Block Size Distribution (RBSD) generated by the propagation of the rockfall mass is required for th e ...
    • Comportamiento post-rotura de los macizos rocosos: y su aplicación al diseño de excavaciones subterráneas 

      Rodríguez Dono, Alfonso; Alejano, Leandro R. (2012)
      Book
      Restricted access - publisher's policy
      El incremento de las obras mineras y civiles también ha aumentado lógicamente el número de percances ocasionados por éstas, principalmente en lo que concierne a la etapa de construcción, pero también a la de explotación o ...
    • Coupling a fluid flow simulation with a geomechanical model of a fractured reservoir 

      Segura Segarra, José María; Paz, C.M.; de Bayser, M.; Zhang, J.; Bryant, P.W.; Gonzalez, Nubia Aurora; Rodrigues, E.; Vargas, P.E.; Carol, Ignacio; Lakshmikantha, Ramasesha Mookanahallipatna; Das, K. C.; Sandha, S.S.; Cerqueira, R.; Mello,, U. (OnePetro, 2013)
      Conference report
      Restricted access - publisher's policy
      Improving the reliability of integrated reservoir development planning and addressing subsidence, fault reactivation and other environmental impacts, requires increasingly sophisticated geomechanical models, especially in ...
    • Deep excavation in an anisotropic argillaceous rock: observations and analysis 

      Rostovanyi Porta, Maria (Universitat Politècnica de Catalunya, 2012-06-29)
      Master thesis (pre-Bologna period)
      Open Access
      Al realizar una excavación en rocas arcillosas se espera que se forme una zona con importantes deformaciones irreversibles y cambios significativos en las propiedades de flujo y el transporte (EDZ – Excavation Damage Zona). ...
    • Diseño y realización de ensayos de lanzamiento de bloques de roca a escala reducida para el estudio de la fragmentación por conminución 

      Parras Sala, Ester (Universitat Politècnica de Catalunya, 2019-06-14)
      Master thesis
      Open Access
      Els despreniments rocosos son fenòmens d'inestabilitat freqüents en vies de comunicació, mines a cel obert, vessants escarpats i penya-segats. Existeixen models que ajuden a simular les trajectòries dels blocs un cop ...
    • Effect of loading and suction history on time dependent deformation of coarse crushed slate 

      Romero Morales, Enrique Edgar; Alvarado de Menéndez, Clara Elena; Alonso Pérez de Agreda, Eduardo (CRC Press, 2013)
      Conference report
      Restricted access - publisher's policy
      The paper presents the results of an experimental investigation aimed at evaluating the time-dependent compressibility of coarse crushed quartzitic slate, focusing on the effects of the previ- ous loading and hydraulic ...
    • Effect of loading and suction history on time dependent deformation of crushed granular aggregates 

      Romero Morales, Enrique Edgar; Alvarado de Menéndez, Clara Elena; Alonso Pérez de Agreda, Eduardo (Springer, 2012)
      Conference report
      Restricted access - publisher's policy
      The paper presents the results of an experimental investigation aimed at evaluating the time-dependent compressibility of a coarse crushed quartzitic slate, focusing on the effects of the previous loading and hydraulic ...
    • El proyecto de desmontes en macizos rocosos 

      Alonso Pérez de Agreda, Eduardo; Gili Ripoll, José Antonio (1989)
      Article
      Open Access
      La importancia que en numerosas obras de infraestructura tienen los desmontes en terreno rocoso, determina la necesidad de emplear métodos de proyecto basados en observaciones de campo, determinación de propiedades resistentes ...