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Bulletin of Engineering Geology and the Environment

Erschienen in:

01.11.2011 | Original Paper

Heterogeneous rock mass classification by means of the geological strength index: the San Mauro formation (Cilento, Italy)

verfasst von: P. Budetta, M. Nappi

Erschienen in: Bulletin of Engineering Geology and the Environment | Ausgabe 4/2011

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Abstract

This paper describes an application of the geological strength index (GSI) method to the San Mauro formation, which is characterized by sandstones alternating with argillaceous marls. The Sandstone/Pelite (S/P) ratio and structural complexity were determined. Geo-structural and geo-mechanical surveys were undertaken in situ and rock samples were tested in the laboratory. A map of the S/P ratio was produced showing the bedrock divided in four classes. Three ranges of GSI values were identified. The values of the intact UCS and of the constant m _i were appropriately reduced to reflect the variable presence of sandstone compared with the pelitic fraction. A “weighted average” of the intact strength properties of the hard and weak layers was adopted. The values for the intact materials were reduced from 20 to 60% depending on the GSI categories of the heterogeneous rock mass. In this way, seven classes of rock masses characterized by different values of GSI, reduced UCS and m _i values were identified.

Vorheriger Artikel The Sumela Monastery slope in Maçka, Trabzon, Northeast Turkey: rock mass properties and stability assessment

Nächster Artikel Landslide susceptibility zonation study using remote sensing and GIS technology in the Ken-Betwa River Link area, India

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Titel: Heterogeneous rock mass classification by means of the geological strength index: the San Mauro formation (Cilento, Italy)
verfasst von: P. Budetta
M. Nappi
Publikationsdatum: 01.11.2011
Verlag: Springer-Verlag
Erschienen in: Bulletin of Engineering Geology and the Environment / Ausgabe 4/2011
Print ISSN: 1435-9529
Elektronische ISSN: 1435-9537
DOI: https://doi.org/10.1007/s10064-011-0351-1

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