Intermediate stress effect in reverse: Strength anisotropy

J. P. Meyer, Joseph F Labuz, Q. Lin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Because rock is typically sampled in the form of a right circular cylinder, it is convenient from a laboratory testing perspective to produce failure by the application of an axi-symmetric state of stress called triaxial compression, where the major principal stress σI = σa the axial stress, and the intermediate and minor principal stresses σII = σIII = σr the radial stress. For isotropic rock, compression testing σI > σII = σIII leads to a conservative estimate of strength parameters, as opposed to triaxial extension, where σI = σII > σIII. However, it is shown that even though a rock may exhibit only slight (< 10%) elastic anisotropy, anomalous behavior can occur in strength testing such that a "reverse" intermediate stress effect appears.

Original languageEnglish (US)
Title of host publication46th US Rock Mechanics / Geomechanics Symposium 2012
Pages187-190
Number of pages4
Volume1
StatePublished - Dec 1 2012
Event46th US Rock Mechanics / Geomechanics Symposium 2012 - Chicago, IL, United States
Duration: Jun 24 2012Jun 27 2012

Other

Other46th US Rock Mechanics / Geomechanics Symposium 2012
CountryUnited States
CityChicago, IL
Period6/24/126/27/12

Fingerprint

Anisotropy
anisotropy
Rocks
compression
rock
Compression testing
Testing
Circular cylinders
effect

Cite this

Meyer, J. P., Labuz, J. F., & Lin, Q. (2012). Intermediate stress effect in reverse: Strength anisotropy. In 46th US Rock Mechanics / Geomechanics Symposium 2012 (Vol. 1, pp. 187-190)

Intermediate stress effect in reverse : Strength anisotropy. / Meyer, J. P.; Labuz, Joseph F; Lin, Q.

46th US Rock Mechanics / Geomechanics Symposium 2012. Vol. 1 2012. p. 187-190.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Meyer, JP, Labuz, JF & Lin, Q 2012, Intermediate stress effect in reverse: Strength anisotropy. in 46th US Rock Mechanics / Geomechanics Symposium 2012. vol. 1, pp. 187-190, 46th US Rock Mechanics / Geomechanics Symposium 2012, Chicago, IL, United States, 6/24/12.
Meyer JP, Labuz JF, Lin Q. Intermediate stress effect in reverse: Strength anisotropy. In 46th US Rock Mechanics / Geomechanics Symposium 2012. Vol. 1. 2012. p. 187-190
Meyer, J. P. ; Labuz, Joseph F ; Lin, Q. / Intermediate stress effect in reverse : Strength anisotropy. 46th US Rock Mechanics / Geomechanics Symposium 2012. Vol. 1 2012. pp. 187-190
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