Abstract

For soft rocks, brittle behavior occurring under low confinement stresses is generally underestimated or even neglected in the solution of boundary value problems, as for example those concerning the stability of rocky cliffs. In these cases, modelling approach should take directly into account processes as the material detachment as well as crack opening and propagation, following fracture mechanics and rock brittleness concepts. This work is aimed at highlighting the role of post-peak brittleness in cliff stability problems involvingsoft calcarenites by means of the application of a hybrid finite-discrete element method (FDEM), which allows for a proper simulation of the brittle rock behavior and the related mechanism of fracture propagation. In particular, the paper presents the simulations performed for an ideal vertical cliff formed of soft calcarenites belongingto the Calcarenite di Gravina Fm. (Upper Pliocene - Lower Pleistocene) - Apulia, Southern Italy. The numerical results highlight the impact of calcarenite brittleness in the stability assessment, the influence of the mesh dependency on the same results and the role of the combination of rock brittleness with joint sets to generate failure mechanisms in the cliff.

Autore Pugliese

• Lollino Piernicola

Tutti gli autori

• P. Lollino; M.D. Pesola; N.L. Fazio; M. Perrotti; G.F. Andriani

Titolo volume/Rivista

Non Disponibile

Anno di pubblicazione

2018

ISSN

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ISBN

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Numero di citazioni Wos

Nessuna citazione

Ultimo Aggiornamento Citazioni

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Numero di citazioni Scopus

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Settori ERC

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Codici ASJC

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