E3S Web Conf.
Volume 106, 20195th International Scientific Conference on Civil Engineering-Infrastructure-Mining
|Number of page(s)||10|
|Published online||24 June 2019|
Impact of roughness of discontinuities on the behaviour of jointed rock samples
Silesian University of Technology, Faculty of Mining and Geology, Gliwice, Poland
* Corresponding author: firstname.lastname@example.org
The subject of the publication is the behavior of rock samples faulted by individual discontinuities with different roughness under three-axial compression conditions, with confining pressures up to 30 MPa. Samples with discontinuities oriented at angles of 30°, 45° and 60° in relation to the directions of external loads were prepared for the tests. Before the three-axial compression tests, the discontinuity surfaces were scanned and parameters describing the geometrical structure of these surfaces were determined. It has been shown that the roughness of the discontinuity walls causes a reduction in stiffness and strength. It has also been shown that with the increase of the confining pressure, the strength of the samples increases linearly, and the higher values of the angle at which the discontinuity is oriented corresponds to higher strength.
Key words: Roughness / Discontinuity / Jointed rock samples / Triaxial compression / Strength / Stiffness
© The Authors, published by EDP Sciences, 2019
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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