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Landslides

pp 1–11 | Cite as

A multi-approach rockfall hazard assessment on a weathered granite natural rock slope

  • Ignacio Pérez-ReyEmail author
  • A. Riquelme
  • L. M. González-deSantos
  • X. Estévez-Ventosa
  • R. Tomás
  • L. R. Alejano
Technical Note

Abstract

After a recent forest fire, a weathered granite rock slope located in the northwest of Spain may become increasingly susceptible to rockfalls. This study presents a multi-approach assessment of rockfall hazard, with some features deserving particular attention. First, the geomorphological context represented by a weathered rock mass with multiple dispersed blocks presenting various potential instability mechanisms. Secondly, the presence of a hillfort behind the slope and a small village at its toe, limiting the available solutions for rockfall protection. Finally, the combination of different remote sensing techniques (unmanned aircraft system topography and light detection and ranging) with a semi-automatic geostructural analysis has been successfully applied to obtain both a 3D point cloud of the wide area under study in addition to an estimation of mean block volume for rockfall simulations. Additionally, the design and implementation of a protective measure (rock dynamic barrier) have been addressed.

Keywords

Rockfall Weathering Granite DSE 3D point cloud 

Supplementary material

10346_2019_1208_MOESM1_ESM.pdf (1.8 mb)
ESM 1 (PDF 1.76 mb)

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of Natural Resources and Environmental EngineeringUniversity of VigoVigoSpain
  2. 2.Department of Civil EngineeringUniversity of AlicanteAlicanteSpain

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