Modelando el comportamiento de macizos rocosos ante efectos antrópicos. Colapso de cavidades en el área periurbana de Málaga

  1. J.M. Azañón 1
  2. E. Puertas 1
  3. F.J. Martínez-Moreno 2
  4. J. Galindo-Zaldivar 1
  5. L. González-Castillo 1
  6. C. Ureña 3
  7. R. Gallego 1
  1. 1 Universidad de Granada
    info

    Universidad de Granada

    Granada, España

    ROR https://ror.org/04njjy449

  2. 2 IDL-Universidade de Lisboa
  3. 3 Ingeniero Senior. Dpto. de Geotecnia, AECOM, Reino Unido
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Journal:
Geotemas (Madrid)

ISSN: 1576-5172

Year of publication: 2016

Issue Title: IX CONGRESO GEOLÓGICO DE ESPAÑA

Issue: 16

Pages: 961-964

Type: Article

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More publications in: Geotemas (Madrid)

Abstract

This work presents an example in which 3D analysis carried out by finite elements methods becomes essential to understand the surface processes occurred in an urbanized rock massif (Cerro del Candado, Malaga). The studied area is a small hill of elliptical shaped plan (700x400m) located to the East of Malaga Town. As a main peculiarity of this hill, it was intensively undergone human activity in recent years. On September 11th, 2000, the collapse of a cavity (100m3 in volume) took place. The application of a 3D finite elements model showed that the highway slope digged in the Eastern face of the mount produced a change in the tensional state inside the hill. Vertical stresses shifted from compression to tension eliminating the vault effect. The ground strains due to collapse of the cavity and obtained by the finite elements model were accurately related to the mapping of cracks on the surface, the sinking of topographical landmarks (located on the top of the mountain) and the photographic analysis (captures before and after the collapse). Thus it is confirmed that the surface sliding which affected the residential house Montegolf was caused by the collapse of a cavity inside the mount.

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