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Experimental investigations on complex block propagation for the assessment of propagation models quality
- Source :
- Landslides, Landslides, Springer Verlag, 2021, 18 (2), pp.639-654. ⟨10.1007/s10346-020-01469-5⟩, Landslides, 2021, 18 (2), pp.639-654. ⟨10.1007/s10346-020-01469-5⟩
- Publication Year :
- 2020
- Publisher :
- Springer Science and Business Media LLC, 2020.
-
Abstract
- International audience; Rockfall propagation models are routinely used for the quantitative assessment of rockfall hazard. Their capacities and limitations remain difficult to assess due to the limited amount of exhaustive experimental data at the slope scale. This article presents experiments of block propagation performedin a quarry located in Authume (France). This study site was chosen for its complexity, related with the presence of topographical discontinuities and ofconfigurations promoting block rolling. A total of more than one hundred blocks were released on two propagation paths. The propagation of the blockswas assessed by measuring the block stopping points as well as their kinematics at specific locations of the paths, called evaluation screens. Significant variability of the stopping points and of the block kinematics at the evaluation screens was observed and preferential transit and deposit zones were highlighted. The analysis of the results showed predominant effect of topography, in particular that related to topographical discontinuities. Significant influence of local and small scale parameters (e.g. block orientation, local topography) was also highlighted. These conclusions are of particular interest for researchers or practitioners who would like to assess the relevance of propagation modelling tools considering this complex study site. In this configuration, the quality of block propagation simulations should notably rely on the accuracy of digital terrain models, and on the integration of local conditions effects using physically based approaches.
- Subjects :
- Rockfall
021110 strategic, defence & security studies
geography
geography.geographical_feature_category
Orientation (computer vision)
0211 other engineering and technologies
Block propagation models
Experimental data
Terrain
02 engineering and technology
Kinematics
Classification of discontinuities
Geotechnical Engineering and Engineering Geology
[SPI]Engineering Sciences [physics]
Trajectory measurements
Topography effects
Experiments
Scale (map)
Algorithm
Geology
021101 geological & geomatics engineering
Block (data storage)
Subjects
Details
- ISSN :
- 16125118 and 1612510X
- Volume :
- 18
- Database :
- OpenAIRE
- Journal :
- Landslides
- Accession number :
- edsair.doi.dedup.....668fa92b4d37f8d731a0671e7b7238ef