Propiedades geotécnicas de las rocas volcánicas altamente cohesivas y de los macizos rocosos de las Islas Canarias
- José Antonio Rodríguez Losada 1
- Luis E. Hernández Gutiérrez 2
- Claudio Olalla Marañón 3
- Aurea Perucho Martínez 3
- Alcibíades Serrano González 3
- 1 Dpt. de Edafología y Geología. Universidad de La Laguna
- 2 Area de Laboratorios y Calidad de la Construcción. Viceconsejería de Infraestructuras y Planificación. Consejería de Obras Públicas y Transportes del Gobierno de Canarias
- 3 Centro de Estudios y Experimentación de Obras Públicas (CEDEX). Ministerio de Fomento
ISSN: 1576-5172
Year of publication: 2008
Issue Title: VII Congreso Geológico de España
Issue: 10
Pages: 899-902
Type: Article
More publications in: Geotemas (Madrid)
Abstract
New data on the geomechanical properties of the highly cohesive volcanic rocks of the Canary Archipelago are provided in this work. There were carried out geomechanical tests such as estimations of P and S waves velocity propagation, estimation of the apparent Specific weigh, Uniaxial Compressive Strength, compressive strength deduced from the hammer rebound index, Tensile Strength, Point Load Test, Strain Modules and some relevant correlations between different studied properties. Based on uniaxial and triaxial compressive tests, as well as on the estimations of the geological strength index (GSI) and textural features, estimations of the rock mass parameters such as tensile strength, uniaxial compressive strength and modulus of deformation were calculated for selected lithotypes. The equivalent Mohr-Coulomb fit such as cohesion and friction angle are also estimated. On the basis of the textural features and petrologic types a preliminary classification of rocks, grouped into different lithotypes, was made. This classification includes different types of basalts, trachybasalts, trachytes, phonolites and ignimbrites.