Abstract
Abstract This work is aimed at revealing the anisotropic full-field displacement and the progressive failure behaviors of interbedded marble under uniaxial compression using a three-dimensional digital image correlation (3D DIC) technique. The effects of the interbed orientation on the field displacement and strain pattern and the crack evolution were analyzed qualitatively and quantitatively. Testing results show that different stress-strain responses can be generated depending on the interbed orientation, and the interbeds influence the localized deformation and high strain concentration pattern. The field displacement evolution curves present different patterns and are impacted by the localized deformation. In addition, the strain localization takes place progressively and develops at a lower rate for rock with 0° and 90° interbed than those of 30° and 60° interbed rock. The quick shear-sliding along the interbed leads to the minimum strength of rock having 30° interbed orientation. It is suggested that rock anisotropic field deformation is structure dependent.
Highlights
IntroductionE.g., layers, joints, faults, foliations, and cleavages, which predominantly impact its deformation and failure mode [1,2,3]
Rock contains various discontinuities, e.g., layers, joints, faults, foliations, and cleavages, which predominantly impact its deformation and failure mode [1,2,3]
Wang et al [7] reveals the deformation characteristics of rock salt with mudstone interbeds surrounding a gas and oil storage cavern; they pointed that the extension of plastic and dilatancy zones in rock salt was impacted by the interbed structure
Summary
E.g., layers, joints, faults, foliations, and cleavages, which predominantly impact its deformation and failure mode [1,2,3]. Wang et al [11] conducted a uniaxial compressive test combined with real-time acoustic emission (AE) monitoring to reveal the anisotropic fracture and energy evolution during rock failure They found that the AE patterns are strongly impacted by interbed structure. There are few investigations on the field strain development and fracture evolution for interbedded rocks under compression using 3D DIC technique To fill this gap, a series of uniaxial compressive tests were performed on interbedded marble samples obtained from an open pit slope to explore the influence of interbed structure on the progressive failure behaviors of rocks. The displacement or strain responses inside or outside the localized zone were analyzed qualitatively and quantitatively based on the measured results of the 3D DIC technique
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
