Geotechnical aspects of drilling and excavation of volcanic terrain for groundwater exploitation

  1. Santamarta, Juan C. 2
  2. Hernández-Gutiérrez, Luis E. 1
  3. Lario-Báscones, Rafael J. 3
  4. Rodríguez-Martín, Jesica 2
  5. Cruz-Pérez, Noelia 2
  1. 1 Consejería de Obras Públicas, Transportes y Vivienda, Gobierno de Canarias, Spain
  2. 2 Universidad de La Laguna, Spain
  3. 3 Universidad Politécnica de Madrid, Spain
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Revista:
REM - International Engineering Journal

ISSN: 2448-167X

Año de publicación: 2023

Volumen: 76

Número: 2

Páginas: 203-210

Tipo: Artículo

DOI: 10.1590/0370-44672021760027 GOOGLE SCHOLAR lock_openAcceso abierto editor

Otras publicaciones en: REM - International Engineering Journal

Resumen

Heterogeneity of volcanic materials that constitute the Canary Islands (Spain) means that mining work in water galleries excavated on these islands, drilling into the terrain for many kilometres, is very challenging. They are composed of materials that vary significantly in terms of cohesion, ranging from very consolidated to loose and highly unstable. Water galleries have been key in the development of the Canary Islands, in order to obtain drinking water from the aquifer. Generally, aquifers are located in mountainous areas with difficult access, which complicates the drilling work. This article analyses the main geotechnical problems encountered in the construction of subterranean water galleries in the Canary Islands, as well as possible solutions to these problems, so that these can be applied to similar territories. As a general conclusion, the instabilities inherent in volcanic materials affect this type of work, and it is necessary to take specific measures for each type of geotechnical risk, as proposed in this article.

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