Rapid characterisation of the extremely large landslide threatening the Rules Reservoir (Southern Spain)
Por:
Carmona, C.Reyes, Galve, J. P, Moreno-Sánchez, M., Riquelme, A., Ruano, P., Millares, A., Barra, A., Monserrat, O., Mateos, R. M.
Publicada:
1 ene 2021
Ahead of Print:
1 sep 2021
Categoría:
Geotechnical engineering and engineering geology
Resumen:
When an active landslide is first identified in an artificial reservoir, a comprehensive study has to be quickly conducted to analyse the possible hazard that it may represent to such a critical infrastructure. This paper presents the case of the El Arrecife Landslide, located in a slope of the Rules Reservoir (Southern Spain), as an example of geological and motion data integration for elaborating a preliminary hazard assessment. For this purpose, a field survey was carried out to define the kinematics of the landslide: translational in favour of a specific foliation set, and rotational at the foot of the landslide. A possible failure surface has been proposed, as well as an estimation of the volume of the landslide: 14.7 million m3. At the same time, remote sensing and geophysical techniques were applied to obtain historical displacement rates. A mean subsidence rate of the landslide around 2 cm/year was obtained by means of synthetic aperture radar interferometry (InSAR) and ground-penetrating radar (GPR) data, during the last 5 and 22 years, respectively. The structure-from-motion (SfM) technique provided a rate up to 26 cm/year during the last 14 years of a slag heap located within the foot of the landslide, due to compaction of the anthropical deposits. All of this collected information will be valuable to optimise the planning of future monitoring surveys (i.e. differential global positioning systems, inclinometers, ground drilling, and InSAR) that should be applied in order to prevent further damage on the reservoir and related infrastructures. © 2021, Springer-Verlag GmbH Germany, part of Springer Nature.
Filiaciones:
Geohazards InSAR Laboratory and Modelling Group (InSARlab), Geoscience Research Department, Geological Survey of Spain (IGME), Calle de Ríos Rosas 23, Madrid, 28003, Spain
Departament of Geodynamics, University of Granada, Avenida del Hospicio s/n, Granada, 18010, Spain
Department of Civil Engineering, University of Alicante, Carrer de San Vicente del Raspeig s/n, San Vicente del Raspeig, 03690, Spain
Instituto Andaluz de Ciencias de La Tierra (IACT-CSIC), Avenida de las Palmeras 4, Granada, Armilla, 18100, Spain
Instituto Interuniversitario de Investigación del Sistema Tierra en Andalucía (IISTA), Avenida del Mediterráneo s/n, Granada, 18006, Spain
Instituto Universitario de Investigación Andaluz de Geofísica Y Prevención de Desastres Sísmicos (IAG), Campus Universitario de Cartuja, Granada, 18071, Spain
Geomatics Division, Centre Tecnològic de Telecomunicacions de Catalunya (CTTC/CERCA), Avinguda Carl Friedrich Gauss 7, Castelldefels, 08860, Spain
Escuela Técnica Superior de Ingenieros de Caminos, Universidad Politécnica de Madrid, Canales y Puertos, Madrid, Spain
HEMAV SL, Carrer d’Esteve Terrades 1, Castelldefels, 08860, Spain
Green Submitted, All Open Access; Green Open Access
|