Half-scale experimental study of rockfall impacts on sandy slopes

Labiouse, V.; Heidenreich, B.

doi:10.5194/nhess-9-1981-2009

Cited by 73 publications

(43 citation statements)

References 12 publications

(11 reference statements)

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“…3-4) is challenged (Labiouse and Heidenreich, 2009). Indeed, from a thorough analysis of impact films, the movement of blocks during impact is found to consist of three main interdependent mechanisms: a normal translation (penetration), a tangential translation (sliding) and a rotation.…”

Section: Relevance Of Impact Parametersmentioning

confidence: 99%

Rockfall characterisation and structural protection – a review

Volkwein

Schellenberg²,

Labiouse

et al. 2011

Nat. Hazards Earth Syst. Sci.

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375

243

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Abstract. Rockfall is an extremely rapid process involving long travel distances. Due to these features, when an event occurs, the ability to take evasive action is practically zero and, thus, the risk of injury or loss of life is high. Damage to buildings and infrastructure is quite likely. In many cases, therefore, suitable protection measures are necessary. This contribution provides an overview of previous and current research on the main topics related to rockfall. It covers the onset of rockfall and runout modelling approaches, as well as hazard zoning and protection measures. It is the aim of this article to provide an in-depth knowledge base for researchers and practitioners involved in projects dealing with the rockfall protection of infrastructures, who may work in the fields of civil or environmental engineering, risk and safety, the earth and natural sciences.

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Section: Relevance Of Impact Parametersmentioning

confidence: 99%

Rockfall characterisation and structural protection – a review

Volkwein

Schellenberg²,

Labiouse

et al. 2011

Nat. Hazards Earth Syst. Sci.

Self Cite

375

243

View full text Add to dashboard Cite

show abstract

“…Rebound behavior is constrained by the substrate properties, rock properties, and incident configurations (e.g., Labiouse and Heidenreich 2009;Bourrier and Hungr 2011). In numerical modeling, errors in the classification of substrate and rock properties are inevitable.…”

Section: Uncertainties In Numerical Modelingmentioning

confidence: 99%

Probabilistic modeling of rockfall trajectories: a review

Lan

2015

Bull Eng Geol Environ

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Probabilistic approaches are widely adopted for the modeling of rockfall trajectories, but are not widely discussed in the literature. This paper aims to help fill this gap by reviewing probabilistic models of rockfall trajectories, while providing some perspectives for future study. We first make it clear that, from a theoretical point of view, the probabilistic approach is necessitated by both the ontic (inherent) uncertainty associated with rockfalls and the epistemic (information) uncertainty associated with numerical modeling. The review suggests that there may be the potential to improve the probabilistic modeling of rockfall trajectories in various aspects, including the systematic probabilistic modeling criterion, the random sampling approaches employed for probabilistic variables, the probabilistic modeling of rock shape, and the probabilistic prediction of rockfall intensity. However, there are still some open questions regarding the promotion of probabilistic modeling in practice. It is not clear whether probabilistically treating all of the variables of rockfall trajectory model with reasoned distributions will lead to significantly improved results, or whether the improvements will be great enough (given the difficulties and costs involved) that it is worth quantifying all of the uncertainties involved in rockfall trajectory modeling. The answers to these questions can be found in the practice of probabilistic modeling itself.

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“…However, sample shape is found to impose strong effects on the measured impact forces. The spherical block had a higher rotation rate in its motion and less energy dissipated during its impact (Labiouse and Heidenreich, 2009). As shown in Fig.…”

Section: Sample Weight and Shapementioning

confidence: 69%

Impact of rockfalls on protection measures: an experimental approach

Yuan

Huang

et al. 2015

Nat. Hazards Earth Syst. Sci.

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Abstract. The determination of rockfall impact force is crucial in designing protection measures. In the present study, laboratory tests are carried out by testing the weight and shape of the falling rock fragments, drop height, incident angle, platform on the slideway, and cushion layer on the protection measures to investigate their influences on the impact force. The test results indicate that the impact force is positively exponential to the weight of rockfall and the instantaneous impact velocity of the rockfall approaching the protection measures. The impact velocity is found to be dominated not only by the drop height but also by the shape of rockfall and the length of the platform on the slideway. A great drop height and/or a short platform produces a fast impact velocity. Spherical rockfalls experience a greater impact velocity than cubes and elongated cuboids. A layer of cushion on the protection measures may reduce the impact force to a greater extent. The reduction effects are dominated by the cushion material and the thickness of the cushion layer. The thicker the cushion layer, the greater the reduction effect and the less the impact force. The stiffer the buffer material, the lower the buffering effect and the greater the impact force. The present study indicates that the current standard in China for designing protection measures may overestimate the impact force by not taking into consideration the rockfall shape, platform, and cushion layer.

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Half-scale experimental study of rockfall impacts on sandy slopes

Cited by 73 publications

References 12 publications

Rockfall characterisation and structural protection – a review

Rockfall characterisation and structural protection – a review

Probabilistic modeling of rockfall trajectories: a review

Impact of rockfalls on protection measures: an experimental approach

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