Analysis of fragmentation of rock blocks from real-scale tests

Real-scale fragmentation tests provide high quality data in order to study the fragmentation pattern of rock blocks. In the tests carried out, the initial rock mass, in terms of both volume and shape, was reconstructed by means of 3D photogrammetry. The fragments size distribution of the bocks teste...

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Detalles Bibliográficos
Autores: Ruiz Carulla, Roger|||0000-0003-0753-4745, Corominas Dulcet, Jordi|||0000-0001-5049-7201, Gili Ripoll, José Antonio|||0000-0003-4718-2545, Matas Casado, Gerard|||0000-0003-4792-3569, Lantada, Nieves|||0000-0002-9974-6915, Moya Sánchez, José|||0000-0001-9686-656X, Prades Valls, Albert|||0000-0002-0164-1681, Núñez Andrés, María Amparo|||0000-0003-2745-7759, Buill Pozuelo, Felipe|||0000-0002-9222-0072, Puig i Polo, Càrol|||0000-0002-8820-6446
Tipo de recurso: artículo
Fecha de publicación:2020
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/331095
Acceso en línea:https://hdl.handle.net/2117/331095
https://dx.doi.org/10.3390/geosciences10080308
Access Level:acceso abierto
Palabra clave:Rockslides
Fragmentation
Fragmental rockfall
Real-scale test
Block size distribution
Esllavissades
Àrees temàtiques de la UPC::Enginyeria civil::Geotècnia::Mecànica de roques
Descripción
Sumario:Real-scale fragmentation tests provide high quality data in order to study the fragmentation pattern of rock blocks. In the tests carried out, the initial rock mass, in terms of both volume and shape, was reconstructed by means of 3D photogrammetry. The fragments size distribution of the bocks tested was measured by hand using a tape. The drop tests were performed in four different sites, releasing a total of 124 blocks and measuring 2907 fragments. The obtained fragment size distributions may be well fitted using power laws. The survival rate (Sr), which is the proportion of remaining block shows a wide range of values. Observing the fragment distribution, two parameters are needed to characterize the fragmentation: the number of fragments produced and Sr. The intensity of the fragmentation is expressed by the exponent of the fitted power laws. Although the results are highly variable and show a stochastic behavior of the fragmentation, we have identified different patterns that reflect some local test conditions

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