Improvement and Construction of a Biaxial Plane - Strain Apparatus for Rock[J]. Journal of Civil and Environmental Engineering, 2006, 28(2). DOI: 10.11835/j.issn.1674-4764.2006.02.013.
A biaxial plane-strain apparatus for investigating the deformation and failure features of rock is improved and constructed on a passive stiff-frame concept;furthermore
a new device inducing confinement on both sides of the prism specimen was designed and built
which can not only impose varying confining pressure on the specimen
but dynamically monitor the change in confinement due to deformation of the specimen during testing.Theoretical analysis and test results show that for rock specimens with Young's modulus below 14.16GPa
the apparatus can provide an acceptable plane-strain condition and be of practical use.