Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/4987
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dc.contributor.authorallCarrozzo, M. T.; Osservatorio di Chimica, Fisica e Geologia Ambientali, Dipartimento di Scienza dei Materiali, Università del Salento, Lecce, Italyen
dc.contributor.authorallLeucci, G.; Osservatorio di Chimica, Fisica e Geologia Ambientali, Dipartimento di Scienza dei Materiali, Università del Salento, Lecce, Italyen
dc.contributor.authorallMargiotta, S.; Osservatorio di Chimica, Fisica e Geologia Ambientali, Dipartimento di Scienza dei Materiali, Università del Salento, Lecce, Italyen
dc.contributor.authorallMazzone, F.; Osservatorio di Chimica, Fisica e Geologia Ambientali, Dipartimento di Scienza dei Materiali, Università del Salento, Lecce, Italyen
dc.contributor.authorallNegri, S.; Osservatorio di Chimica, Fisica e Geologia Ambientali, Dipartimento di Scienza dei Materiali, Università del Salento, Lecce, Italyen
dc.date.accessioned2009-03-26T15:02:23Zen
dc.date.available2009-03-26T15:02:23Zen
dc.date.issued2008-02en
dc.identifier.urihttp://hdl.handle.net/2122/4987en
dc.description.abstractThe Salento Peninsula (south-eastern Italy) is characterized by sedimentary rocks. The carbonatic nature of the rocks means they are affected by karst phenomena, forming such features as sinkholes, collapsed dolines and caverns, as a result of chemical leaching of carbonates by percolating water. The instability of these phenomena often produces land subsidence problems. The importance of these events is increasing due to growing urbanization, numerous quarries affecting both the subsoil and the surface, and an important coastline characterized by cliffs. This paper focuses on geological and geophysical methods for the characterization of soft sedimentary rock, and presents the results of a study carried out in an urban area of Salento. Taking the Q system derived by Barton (2002) as the starting point for the rock mass classification, a new approach and a modification of the Barton method are proposed. The new equation proposed for the classification of sedimentary rock mass (Qsrm) takes account of the permeability of the rock masses, the geometry of the exposed rock face and their types (for example, quarry face, coastal cliff or cavity), the nature of the lithotypes that constitute the exposed sequence, and their structure and texture. This study revises the correlation between Vp and Q derived by Barton (2002), deriving a new empirical equation correlating P-wave velocities and Qsrm values in soft sedimentary rock. We also present a case history in which stratigraphical surveys, Electrical Resistivity Tomography (ERT), and seismic surveys were applied to in situ investigations of subsidence phenomena in an urban area to estimate rock mass quality. Our work shows that in the analysis of ground safety it is important to establish the rock mass quality of the subsurface structures; geophysical exploration can thus play a key role in the assessment of subsidence risk.en
dc.language.isoEnglishen
dc.relation.ispartofAnnals of Geophysicsen
dc.relation.ispartofseries1/51 (2008)en
dc.subjectsedimentary rock mass qualityen
dc.subjectstratigraphyen
dc.subjectseismic refraction tomographyen
dc.subjectERTen
dc.titleIntegrated geophysical and geological investigations applied to sedimentary rock mass characterizationen
dc.typearticleen
dc.description.status191 - 202en
dc.type.QualityControlPeer-revieweden
dc.subject.INGV04. Solid Earth::04.02. Exploration geophysics::04.02.99. General or miscellaneousen
dc.relation.referencesBARTON, N. (2002): Some new Q-value correlations to assist in site characterisation and tunnel design, Int. J. Rock Mech. Min. Sci., 39, 185-216. BARTON, N. (2006): Rock quality, seismic velocity, attenuation and anisotropy, (Taylor & Francis Balkema). BARTON, N., R. LIEN and J LUNDE (1974): Engineering classification of rockmasses for the design of tunnel support, Rock Mech., 6 (4), 189-236. BIENIAWSKI, Z.T. (1973): Engineering classification of jointed rock masses, Trans. S. Afr. Inst Civ. Eng., 15, 335-344. BOADU, F.K. (2000): Predicting the transport properties of fractured rocks from seismic information: numerical experiments, J. Appl. Geophys., 44, 103-113. BOADU, F.K. and T.L. LONG (1996): Effects of fractures on seismic wave velocity and attenuation, Geophys. J. Int., 127, 86-110. DEERE, D.U. (1963): Technical description of rock cores for engineering pur pose, Rock Mech. Eng. Geol., 1, 18-22; HOEK, E. (1994): Strenght of rock and rock masses, ISRM News J., 2 (2), 4-16 HOEK, E. and E.T. BROWN (1997): Practical estimates or rock mass strength, Int. J. Rock Mech. Mining Sci. Geomech. Abstr., 34 (8), 1165-1186. HOEK, E., P.K. KAISER and W.F. BAWDEN (1995): Support of Underground Excavations in Hard Rock (Rotterdam, Balkema). KAHRAMAN, S. (2002): The effects of fracture roughness on P-wave velocity, Eng. Geol., 63, 347-350. LEUCCI, G. (2004): I metodi elettromagnetico impulsivo, elettrico e sismico tomografico a rifrazione per la risoluzione di problematiche ambientali: sviluppi metodologici e applicazioni, Ph.D. Thesis. LOKE, M.H. (2001): Tutorial: 2D and 3D Electrical Imaging Survey (http://www.geotomo.com/) MARINOS. P, and E. HOEK (2001): Estimating the geotechnical properties of heterogeneous rock masses such as flysch, Bull. Eng. Geol. Environ. (IAEG), 60, 85-92. MILNE, D., J. HADJIGEORGIOU and PAKALNIS (1998): Rock mass characterization for underground hard rock mines, Tunnelling Underground Space Technol., 13 (4), 383-391; NOLET, G. (1987): Seismic Tomography (D. Reidel Publishing Company, Dordrecht, Holland) PALMSTROM, A. (1982): The volumetric joint count – a useful and simple measure of the degree of rock jointing, in Proc. 4th Int. Congress Int. Ass. Eng., Geol. Dep., 5, 221-228; SANDMEIER, K.J. (2002): Reflexw 3.0 Manual (Sandmeier Software, Zipser Strabe 1, Karlsruhe, Germany) SJOGREN, B., A. OFSTHUS and J. SANDBERG (1979): Seismic classification of rock mass qualities, Geophys. Prospect., 27(2), 409-442.en
dc.description.journalTypeJCR Journalen
dc.description.fulltextopenen
dc.contributor.authorCarrozzo, M. T.en
dc.contributor.authorLeucci, G.en
dc.contributor.authorMargiotta, S.en
dc.contributor.authorMazzone, F.en
dc.contributor.authorNegri, S.en
dc.contributor.departmentOsservatorio di Chimica, Fisica e Geologia Ambientali, Dipartimento di Scienza dei Materiali, Università del Salento, Lecce, Italyen
dc.contributor.departmentOsservatorio di Chimica, Fisica e Geologia Ambientali, Dipartimento di Scienza dei Materiali, Università del Salento, Lecce, Italyen
dc.contributor.departmentOsservatorio di Chimica, Fisica e Geologia Ambientali, Dipartimento di Scienza dei Materiali, Università del Salento, Lecce, Italyen
dc.contributor.departmentOsservatorio di Chimica, Fisica e Geologia Ambientali, Dipartimento di Scienza dei Materiali, Università del Salento, Lecce, Italyen
dc.contributor.departmentOsservatorio di Chimica, Fisica e Geologia Ambientali, Dipartimento di Scienza dei Materiali, Università del Salento, Lecce, Italyen
item.openairetypearticle-
item.cerifentitytypePublications-
item.languageiso639-1en-
item.grantfulltextopen-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
crisitem.author.deptOsservatorio di Fisica e Chimica della Terra e dell Ambiente, Dipartimento di Scienza dei Materiali, Università di Lecce, Italy-
crisitem.author.deptOsservatorio di Chimica, Fisica e Geologia Ambientali, Dipartimento di Scienza dei Materiali, Università di Lecce, Italy-
crisitem.author.deptOsservatorio di Chimica, Fisica e Geologia Ambientali, Dipartimento di Scienza dei Materiali, Università del Salento, Lecce, Italy-
crisitem.author.deptOsservatorio di Chimica, Fisica e Geologia Ambientali, Dipartimento di Scienza dei Materiali, Università del Salento, Lecce, Italy-
crisitem.author.deptOsservatorio di Chimica, Fisica e Geologia Ambientali, Dipartimento di Scienza dei Materiali, Università di Lecce, Italy-
crisitem.classification.parent04. Solid Earth-
Appears in Collections:Annals of Geophysics
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