Failure process characterisation of a limestone from deterministic models

Citation
Jf. Couvreur et Jf. Thimus, Failure process characterisation of a limestone from deterministic models, ROCK MECH R, 33(1), 2000, pp. 15-30
Citations number
33
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Geological Petroleum & Minig Engineering
Journal title
ROCK MECHANICS AND ROCK ENGINEERING
ISSN journal
0723-2632 → ACNP
Volume
33
Issue
1
Year of publication
2000
Pages
15 - 30
Database
ISI
SICI code
0723-2632(200001/03)33:1<15:FPCOAL>2.0.ZU;2-R
Abstract
About 30 uniaxial and triaxial compression tests have been conducted on a d ry, porous and homogeneous limestone. Compressional and shear waves were pr opagated both in the axial and radial directions. From the accurate determi nation of velocities, effective medium theories are used to model effective moduli of this rock in terms of the properties of their different elements . Three deterministic models are applied after Tourenq and Denis, O'Connell and Budiansky and Soga et al. By estimating crack density parameters as a function of stress or strain up to rupture, these models indicate that an i nterpretation in terms of closure-opening-creation of cracks is valid. It i s concluded that the application of the model of Soga et al. provides an ea sy and pragmatic scheme to characterise the failure process of the limeston e tested under dry conditions.