Failure mechanisms and stability analyses of granitic boulders focusing a case study in Galicia (Spain)
Autor: | L. M. González-deSantos, Leandro R. Alejano, Ignacio Pérez-Rey, Adrián Riquelme |
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Přispěvatelé: | Universidad de Alicante. Departamento de Ingeniería Civil, Ingeniería del Terreno y sus Estructuras (InTerEs) |
Rok vydání: | 2019 |
Předmět: |
0211 other engineering and technologies
Geomorphology Basic friction angle 3D printing 02 engineering and technology Geotechnical Engineering and Engineering Geology Stability (probability) Hazard Ingeniería del Terreno Natural (archaeology) Photogrammetry Mining engineering Rock mechanics Stability Boulder Geology 021102 mining & metallurgy 021101 geological & geomatics engineering |
Zdroj: | RUA. Repositorio Institucional de la Universidad de Alicante Universidad de Alicante (UA) |
ISSN: | 1365-1609 |
Popis: | Granitic boulders are widespread geomorphological elements, particularly found in humid granitic areas. Although they seldom represent a hazard for people or infrastructures, sometimes their location in steep or natural slopes may jeopardise their stability and potentially affect people or infrastructures. In addition, their complex geometry makes the instability mechanisms difficult to identify, so it is even more difficult to compute factors of safety regarding their stability. In this paper, the authors analyse potential failure mechanisms of granite boulders based on analytical mechanic calculations and physical tilt tests, permitting understanding the phenomena under scrutiny. Then, they study the stability of one of these boulders: the Pena do Equilibrio or equilibrium rock. To do that they resort to standard geotechnical characterization and advanced geometrical characterization derived from UAV photogrammetric and 3D Laser Scanning of the boulder. The presented results exemplify how the application of these recently available topographic technologies, in combination with rock mechanics approaches, enable a rigorous analysis of the stability of granite boulders. |
Databáze: | OpenAIRE |
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