Variability of mechanical properties of bimrock

Y. M. Tien, Y. C. Lu, H. H. Cheng

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Scopus citations

Abstract

This paper used PFC2D to simulate bimrock mechanical behaviors under uniaxial compressive tests and presents the means and variances of uniaxial compressive strength (UCS), Young's modulus (E), and Poisson's ratios (o) for various volume fractions and strain gauge lengths. The results show that UCS, E, and v increase as Vf increases, and simulated E and ν were consistent with the differential scheme and Hashin-Shtrikman bounds. In quantifying the uncertainty of Young's modulus and Poisson's ratio measurements using a strain gauge, the measurement uncertainties initially increase and then decrease with increasing Vf, when Vf =0.3∼0.4 (0 or 1), Young's modulus and Poisson's ratio reach a maximum (minimum) value. In addition, crack propagation was also observed and discussed in this paper.

Original languageEnglish
Title of host publication49th US Rock Mechanics / Geomechanics Symposium 2015
PublisherAmerican Rock Mechanics Association (ARMA)
Pages1125-1132
Number of pages8
ISBN (Electronic)9781510810518
StatePublished - 2015
Event49th US Rock Mechanics / Geomechanics Symposium - San Francisco, United States
Duration: 29 Jun 20151 Jul 2015

Publication series

Name49th US Rock Mechanics / Geomechanics Symposium 2015
Volume2

Conference

Conference49th US Rock Mechanics / Geomechanics Symposium
Country/TerritoryUnited States
CitySan Francisco
Period29/06/151/07/15

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