Now showing items 1-20 of 23

    • A fractal fragmentation model for rockfalls 

      Ruiz Carulla, Roger; Corominas Dulcet, Jordi; Mavrouli, Olga Christina (2017-06)
      Article
      Open Access
      The impact-induced rock mass fragmentation in a rockfall is analyzed by comparing the in situ block size distribution (IBSD) of the rock mass detached from the cliff face and the resultant rockfall block size distribution ...
    • 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 methodology to obtain the block size distribution of fragmental rockfall deposits 

      Ruiz Carulla, Roger; Corominas Dulcet, Jordi; Mavrouli, Olga Christina (2015-06-30)
      Article
      Open Access
    • An empirical approach to rockfall fragmentation 

      Corominas Dulcet, Jordi; Ruiz Carulla, Roger; Mavrouli, Olga Christina (2015)
      Conference lecture
      Restricted access - publisher's policy
      The impact-induced rock mass fragmentation in a rockfall is analyzed by comparing the In Situ Block Size Distribution (IBSD) at the cliff face and the Rockfall Block Size Distribution (RBSD) on the slope. The IBSD is ...
    • Analysis of rock block fragmentation by means of real-scale tests 

      Ruiz Carulla, Roger; Matas Casado, Gerard; Prades Valls, Albert; Gili Ripoll, José Antonio; Corominas Dulcet, Jordi; Lantada, Nieves; Buill Pozuelo, Felipe; Mavrouli, Olga Christina; Núñez Andrés, María Amparo; Moya Sánchez, José (Sage, 2016)
      Conference lecture
      Restricted access - publisher's policy
    • Analysis of rockfalls by means of a fractal fragmentation model 

      Ruiz Carulla, Roger; Corominas Dulcet, Jordi (2020-03)
      Article
      Restricted access - publisher's policy
      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, ...
    • Caracterització de la fragmentació en els despreniments rocosos 

      Ruiz Carulla, Roger (Universitat Politècnica de Catalunya, 2013-12-13)
      Master thesis
      Open Access
      El present treball està centrat en l'estudi, la comprensió i l'anàlisi del procés de fragmentació de blocs rocosos al llarg del seu recorregut en despreniments i la distribució de blocs rocosos que en resulta. En concret, ...
    • Diseño y primeros resultados de tres ensayos de lanzamiento de bloques de roca para el estudio de la fragmentación 

      Gili Ripoll, José Antonio; Matas Casado, Gerard; Corominas Dulcet, Jordi; Núñez Andrés, María Amparo; Lantada, Nieves; Ruiz Carulla, Roger; Mavrouli, Olga; Buill Pozuelo, Felipe; Moya Sánchez, José; Prades Valls, Albert; Puig i Polo, Càrol; Martínez Bofill, Joan; Salo Salgado, Lluis (Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE), 2017)
      Conference report
      Open Access
      RESUMENLa caída de bloques de roca sobre infraestructuras y zonas urbanizadas causa elevados daños y alguna víctima cada año en nuestro país. Los modelos de propagación existentes no tienen en cuenta la fragmentación durante ...
    • Experiencias con drones para el estudio de movimientos de ladera 

      Ruiz Carulla, Roger; Corominas Dulcet, Jordi; Hurlimann Ziegler, Marcel (International Centre for Numerical Methods in Engineering (CIMNE), 2017)
      Conference report
      Open Access
      La tecnología de los vehículos aéreos no tripulados o drones (UAV) se ha desarrollado de forma exponencial los últimos años. Su uso para la toma de fotografías y el posterior tratamiento con técnicas de fotogrametría ...
    • Experimental study on rockfall fragmentation: in situ test design and first results 

      Gili Ripoll, José Antonio; Ruiz Carulla, Roger; Matas Casado, Gerard; Corominas Dulcet, Jordi; Lantada, Nieves; Núñez Andrés, María Amparo; Mavrouli, Olga Christina; Buill Pozuelo, Felipe; Moya Sánchez, José; Prades Valls, Albert; Moreno, Sjædric (2016)
      Conference lecture
      Restricted access - publisher's policy
      Fragmentation is a common feature of rockfalls that exerts a strong influence over the trajectories of the generated blocks, the impact energies and the runout. Real scale rockfall tests have traditionally been designed ...
    • Integració de bases de dades referents a informació geotècnica i al comportament de talussos en un projecte SIG 

      Ruiz Carulla, Roger (Universitat Politècnica de Catalunya, 2012-06-25)
      Minor thesis
      Open Access
      Els sistemes informàtics actuals permeten registrar una gran quantitat de dades que dia a dia van fent créixer les bases de dades de diferents organismes de l’administració. Els sistemes d’emmagatzematge i tractament ...
    • La avalancha de rocas de la Coma d'Espòs, Pirineo Central, Lleida: un evento prehistórico catastrófico 

      Corominas Dulcet, Jordi; Ruiz Carulla, Roger (Instituto Geológico y Minero de España (IGME), 2016)
      Conference report
      Restricted access - publisher's policy
      Rock avalanches are extreme phenomena present in ridges with steep slopes and height. In the Iberian Peninsula various deposits have been described and interpreted as rock avalanches, especially given its magnitude and ...
    • Magnitude and frequency relations: are there geological constraints to the rockfall size? 

      Corominas Dulcet, Jordi; Mavrouli, Olga Christina; Ruiz Carulla, Roger (2018-05)
      Article
      Open Access
      There exists a transition between rockfalls, large rock mass failures, and rock avalanches. The magnitude and frequency relations (M/F) of the slope failure are increasingly used to assess the hazard level. The management ...
    • Modelización de desprendimientos rocosos considerando la fragmentación 

      Matas Casado, Gerard; Lantada, Nieves; Corominas Dulcet, Jordi; Gili Ripoll, José Antonio; Ruiz Carulla, Roger; Prades Valls, Albert (International Centre for Numerical Methods in Engineering (CIMNE), 2017)
      Conference report
      Open Access
      Determinar el riesgo al que está expuesto un edificio o una infraestructura debido a los desprendimientos rocosos mediante la Evaluación Cuantitativa de Riesgo requiere estudiar la peligrosidad, que integra la magnitud del ...
    • Monitoring of fast moving landslides in the Pyrenees 

      Mavrouli, Olga Christina; Hurlimann Ziegler, Marcel; Abanco Martínez de Arenzana, Claudia; Moya Sánchez, José; Copons Llorens, Ramon; Ruiz Carulla, Roger (2016)
      Conference report
      Restricted access - publisher's policy
      The paper presents the experience of two instrumented sites in the Pyrenees where debris flows and rock falls occur frequently. The first one is the debris-flow monitoring system in the Rebaixader catchment, Central Pyrenees, ...
    • Quantitative analysis of risk from fragmental rockfalls 

      Corominas Dulcet, Jordi; Matas Casado, Gerard; Ruiz Carulla, Roger (2019-01)
      Article
      Open Access
      Rockfalls are ubiquitous diffuse hazard in mountain regions, cliffs, and cutslopes, with the potential of causing victims and severely damaging buildings and infrastructures. A vast majority of detached rock masses break ...
    • Rockfall analysis : failure, fragmentation and propagation characterization : a fractal fragmentation of rockfalls 

      Ruiz Carulla, Roger (Universitat Politècnica de Catalunya, 2018-07-02)
      Doctoral thesis
      Open Access
      The present thesis aims at the analysis of the fragmentation of rockfalls. The fragmentation is a complex phenomenon poorly understood with a lack of tools to reproduce it on rockfall simulators. The effect of fragmentation ...
    • Rockfall fragmentation analysis: Vilanova de Banat case study 

      Matas Casado, Gerard; Lantada, Nieves; Corominas Dulcet, Jordi; Gili Ripoll, José Antonio; Ruiz Carulla, Roger; Prades Valls, Albert (Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE), 2017)
      Conference report
      Open Access
      Fragmentation is a critical mechanism for the calculation of the trajectories of the blocks and the impact energies, for the assessment of the potential damage and for the design of protec-tive structures, although few ...
    • Rockfall occurrence and fragmentation 

      Corominas Dulcet, Jordi; Mavrouli, Olga; Ruiz Carulla, Roger (Springer, 2017)
      Conference report
      Open Access
      Rockfalls are very rapid and damaging slope instability processes that affect mountainous regions, coastal cliffs and slope cuts. This contribution focuses on fragmental rockfalls in which the moving particles, particularly ...
    • RockGIS: a GIS-based model for the analysis of fragmentation in rockfalls 

      Matas Casado, Gerard; Lantada, Nieves; Corominas Dulcet, Jordi; Gili Ripoll, José Antonio; Ruiz Carulla, Roger; Prades Valls, Albert (2017-03-31)
      Article
      Open Access
      A rockfall is a mass instability event frequently observed in road cuts, open pit mines and quarries, steep slopes and cliffs. After its detachment, the rock mass may disaggregate and break due to the impact with the ground ...