Probabilistic modeling of rockfall trajectories: a review

Li, Langping; Lan, Hengxing

doi:10.1007/s10064-015-0718-9

Cited by 87 publications

(39 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Some exceptions regarding damage locations as extracted from the field observations compared to modelled locations were detected in profiles 6 and 7, which differences can be attributed to the 2D modelling, as the terrain is highly irregular and the trajectories of falling rocks can be complicated. Here 3D modelling would be more effective and appropriate (Li and Lan 2015).…”

Section: Rock Fall Modellingmentioning

confidence: 99%

Advances in Landslide Research

Borgatti¹

2018

View full text Add to dashboard Cite

The Regional Symposium on Landslides in the Adriatic-Balkan Region (ReSyLAB) is a biannual event, organized by the Adriatic-Balkan Network of the International Consortium on Landslides, Kyoto, Japan (ICL, http://icl.iplhq.org/). The 3 rd ReSyLAB in Ljubljana 2017 followed two previous successful symposia in Zagreb, Croatia (1 st ReSyLAB 2013) and Belgrade, Serbia (2 nd ReSyLAB 2015). A regional symposium aims specifically to strengthen the cooperation of the ICL members in the region and generally among the network of stakeholders involved in landslide research and landslide risk reduction. The next, 4 th ReSyLAB is scheduled for October 2019 and is to be held in Sarajevo, Bosnia and Hercegovina.

show abstract

Section: Rock Fall Modellingmentioning

confidence: 99%

Advances in Landslide Research

Borgatti¹

2018

View full text Add to dashboard Cite

show abstract

“…There are many sources of randomness when performing numerical rockfall analyses, such as the source location, the rock properties, the initial kinematic conditions, the slope properties during impacts, etc. Li and Lan (2015) present an exhaustive review of how existing models deal with uncertainties.…”

Section: -Block Shapementioning

confidence: 99%

“…Considering the blocks unbreakable during their propagation is a common hypothesis in most of the existing propagation models (Li and Lan, 2015). However, fragmentation is a process frequently observed in rockfalls and it is defined as the separation of the initial rock mass into smaller pieces upon impact with the ground (Evans and Hungr, 1993).…”

Section: -Block Shapementioning

confidence: 99%

RockGIS: a GIS-based model for the analysis of fragmentation in rockfalls

et al. 2017

View full text Add to dashboard Cite

ABSTRACT: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 surface, thus producing new rock fragments. The consideration of the fragmentation of the rockfall mass is critical for the calculation of the trajectories of the blocks and the impact energies, for the assessment of the potential damage and the design of protective structures. In this paper, we present RockGIS, a GIS-Based tool that simulates stochastically the fragmentation of the rockfall, based on a lumped mass approach. In RockGIS, the fragmentation is triggered by the disaggregation of the detached rock mass through the pre-existing discontinuities just before the impact with the ground. An energy threshold is defined in order to determine whether the impacting blocks break or not. The distribution of the initial mass between a set of newly generated rock fragments is carried out stochastically following a power law. The trajectories of the new rock fragments are distributed within a cone. The fragmentation model has been calibrated and tested with a 10,000m 3 rockfall that took place in 2011 near Vilanova de Banat, Eastern Pyrenees, Spain.

show abstract

“…En su publicación, Li and Lan (2015) hacen una revisión de las incertidumbres de los modelos de simulación de trayectorias de bloques y remarcan que, al menos hasta entonces, el único modelo que incluye la fragmentación es el programa HY-STONE. En el modelo de desprendimientos que actualmente desarrolla nuestro grupo se hace hincapié en la importancia de considerar la fractura del bloque que está cayendo.…”

Section: Determinación De Trayectorias De Bloques Rocosos En Ensayos unclassified

Determinación De Trayectorias De Bloques Rocosos en Ensayos Mediante Videogrametría

Matas¹,

Núñez-Andrés²,

Pozuelo³

et al. 2017

Proceedings - 1st Congress in Geomatics Engineering - CIGeo

View full text Add to dashboard Cite

Abstract:Determining the trajectory of a block that falls down on a slope is not straightforward due to the high number of variables involved. Because of this, the appropriate understanding of how these variables may affect the trajectories is required.In this work, we estimate some magnitudes that affect the trajectories of the blocks such as the coefficient of restitution and the energy thresholds for fragmentation of the blocks among others. We have chosen the controlled scenario of a quarry in which targets and high speed video cameras were arranged to capture images of the blocks falling from the top of a slope. The position of the blocks over time has been measured from video frames applying photogrammetric methods. From here, the velocities and the accelerations have been determined, and with the estimated mass of each block, we have calculated the energy balance.Key words: Geomatics, Photogrammetry, Videogrammetry, 3D Models, Rock falls. Resumen:La trayectoria de un bloque que cae por un talud no es fácil de determinar porque influyen muchas variables difíciles de cuantificar. Ello requiere del conocimiento de cómo estas variables afectan a las trayectorias.En este trabajo se estiman algunas magnitudes que afectan la trayectoria de los bloques como son los coeficientes de restitución y los límites de energía para generar la fragmentación del bloque, entre otros. Para ello se ha escogido el entorno controlado de una cantera, en el que se han dispuesto dianas y cámaras de vídeo de alta velocidad, para capturar imágenes de las caídas de bloques lanzados desde lo alto de un talud. Hemos medido la posición del bloque respecto del tiempo a partir de los fotogramas de vídeo obtenidos, aplicando métodos fotogramétricos. A partir de aquí se determinan las velocidades y las aceleraciones y, con la estimación de la masa de cada bloque, hemos calculado los balances de energía.

show abstract

Probabilistic modeling of rockfall trajectories: a review

Cited by 87 publications

References 53 publications

Advances in Landslide Research

Advances in Landslide Research

RockGIS: a GIS-based model for the analysis of fragmentation in rockfalls

Determinación De Trayectorias De Bloques Rocosos en Ensayos Mediante Videogrametría

Contact Info

Product

Resources

About