Pérez-Rey, Ignacio, Riquelme, Adrián, González-deSantos, Luis Miguel, Estévez-Ventosa, Xian, Tomás, Roberto, Alejano, Leandro R.
A multi-approach rockfall hazard assessment on a weathered granite natural rock slope
Landslides. 2019, 16(10): 2005-2015. doi:10.1007/s10346-019-01208-5
URI: http://hdl.handle.net/10045/93394
DOI: 10.1007/s10346-019-01208-5
ISSN: 1612-510X (Print)
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
Springer Berlin Heidelberg
info:eu-repo/semantics/article