Articles | Volume 21, issue 4
Nat. Hazards Earth Syst. Sci., 21, 1263–1278, 2021
https://doi.org/10.5194/nhess-21-1263-2021
Nat. Hazards Earth Syst. Sci., 21, 1263–1278, 2021
https://doi.org/10.5194/nhess-21-1263-2021

Research article 21 Apr 2021

Research article | 21 Apr 2021

Cascade effect of rock bridge failure in planar rock slides: numerical test with a distinct element code

Adeline Delonca et al.

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Cited articles

Agliardi, F., Crosta, G. B., Meloni, F., Valle, C., and Rivolta, C.: Structurally-Controlled Instability, Damage and Slope Failure in a Porphyry Rock Mass, Tectonophysics, 605, 34–47, https://doi.org/10.1016/j.tecto.2013.05.033, 2013. 
Bonilla–Sierra, V., Scholtès, L., Donzé, F., and Elmouttie, M.: DEM Analysis of Rock Bridges and the Contribution to Rock Slope Stability in the Case of Translational Sliding Failures, Int. J. Rock Mech. Min., 80, 67–78, https://doi.org/10.1016/j.ijrmms.2015.09.008, 2015. 
Bossi, G., Borgatti, L., Gottardi, G., and Marcato, G.: The Boolean Stochastic Generation Method – BoSG: A Tool for the Analysis of the Error Associated with the Simplification of the Stratigraphy in Geotechnical Models, Eng. Geol., 203, 99–106, https://doi.org/10.1016/j.enggeo.2015.08.003, 2016. 
Bourrier, F., Dorren, L., Nicot, F., Berger, F., and Darve, F.: Toward Objective Rockfall Trajectory Simulation Using a Stochastic Impact Model, Geomorphology, 110, 68–79, 2009. 
Brideau, M.-A., Yan, M., and Stead, D.: The Role of Tectonic Damage and Brittle Rock Fracture in the Development of Large Rock Slope Failures, Geomorphology, 103, 30–49, https://doi.org/10.1016/j.geomorph.2008.04.010, 2009. 
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Short summary
Rockfalls are a major sources of danger, particularly along transportation routes. Thus, the assessment of their occurrence is a major challenge for risk management. One interesting factor involved in the occurrence of an event is the failure mechanism of rock bridges along the potential failure plane. This work proposes to study the phenomenology of this failure considering numerical modelling. The influence of rock bridge position in regard to the rockfall failure mode is highlighted.
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