caa a22 4500 605454655 CHVBK 20210128100208.0 cr unu---uuuuu 210128e20150501xx s 000 0 eng 10.1007/s10064-014-0642-4 doi (NATIONALLICENCE)springer-10.1007/s10064-014-0642-4 Geomechanical characterization of a highly heterogeneous flysch rock mass by means of the GSI method [Elektronische Daten] [G. Pepe, M. Piazza, A. Cevasco] Over the last years, several researchers have investigated heterogeneous rock mass behaviour using the Geological Strength Index (GSI) classification system in conjunction with the Hoek-Brown criterion. Because of the variable composition of such rock masses, the availability of both petrographic and mechanical features of the intact rock is essential in order to carry out geomechanical studies. Starting from the detailed evaluation of the strength and deformability of the intact rock, the GSI method was applied to the Sanremo flysch formation, which is widely outcropping in Western Italy and involved in many engineering projects. It is characterized by both a remarkable lithological heterogeneity and a structural complexity. Petrographic analysis and laboratory tests allowed the definition of the main constituent lithotypes and the identification of their mechanical properties, whereas geomechanical surveys were performed in order to estimate the GSI values and the strong/weak ratio. Based on the frequency of strong and weak layers, a "weighted average” of intact rock values was used in estimating the rock mass parameters. Three main rock mass classes were identified, and a basic engineering geological map of the study area was prepared. Springer-Verlag Berlin Heidelberg, 2014 Geological Strength Index nationallicence Heterogeneous rock masses nationallicence Hoek-Brown failure criterion nationallicence Ligurian Alps nationallicence Sanremo flysch nationallicence Pepe G. Department of Earth, Environmental and Life Sciences, University of Genoa, Genoa, Italy aut Piazza M. Department of Earth, Environmental and Life Sciences, University of Genoa, Genoa, Italy aut Cevasco A. Department of Earth, Environmental and Life Sciences, University of Genoa, Genoa, Italy aut Bulletin of Engineering Geology and the Environment Springer Berlin Heidelberg 74/2(2015-05-01), 465-477 1435-9529 74:2<465 2015 74 10064 https://doi.org/10.1007/s10064-014-0642-4 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10064-014-0642-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Pepe G. Department of Earth, Environmental and Life Sciences, University of Genoa, Genoa, Italy aut NATIONALLICENCE 700 1- Piazza M. Department of Earth, Environmental and Life Sciences, University of Genoa, Genoa, Italy aut NATIONALLICENCE 700 1- Cevasco A. Department of Earth, Environmental and Life Sciences, University of Genoa, Genoa, Italy aut NATIONALLICENCE 773 0- Bulletin of Engineering Geology and the Environment Springer Berlin Heidelberg 74/2(2015-05-01), 465-477 1435-9529 74:2<465 2015 74 10064