Now showing items 1-20 of 21

  • 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
  • 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 Zarzosa, Maria de Las Nieves; Buill Pozuelo, Felipe; Mavrouli, Olga Christina; Núñez Andrés, María Amparo; Moya Sánchez, José (Sage, 2016)
    Conference lecture
    Restricted access - publisher's policy
  • 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 ...
  • 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 Zarzosa, Maria de Las 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 Zarzosa, Maria de Las 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 Zarzosa, Maria de Las 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
    Restricted access - publisher's policy
    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 Zarzosa, Maria de Las 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 Zarzosa, Maria de Las 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 ...
  • Seismic energy analysis as generated by impact and fragmentation of single-block experimental rockfalls 

    Salo Salgado, Lluis; Corominas Dulcet, Jordi; Lantada Zarzosa, Maria de Las Nieves; Matas Casado, Gerard; Prades Valls, Albert; Ruiz Carulla, Roger (American Geophysical Union (AGU), 2018-06)
    Article
    Open Access
    The analysis of seismic signals obtained from near-source triaxial accelerometer recordings of two sets of single-block rockfall experiments is presented. The tests were carried out under controlled conditions in two ...