International Scientific Journal


This study examined the fracture morphology properties of rock cores and studied the mechanical characteristics of jointed rock at depths of 2400 m, with inclinations of 15°, 30°, and 60°. The results showed that jointed rock is significantly controlled by joint weak areas, particularly when the joint inclination exceeds 30°. Additionally, rock damage increases with joint inclination during engineering disturbance, however, its pre-peak plastic characteristics weaken with joint inclination. The damage stress level is higher with a larger joint inclination, decreasing the bearing capacity. Further, a strength criterion for jointed rock considering engineering disturbance was established. It is found that strength exhibits a V-shaped distribution with joint inclination, and 30° to 75° jointed rock is significantly lower than before the disturbance.
PAPER REVISED: 2023-05-12
PAPER ACCEPTED: 2023-05-17
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THERMAL SCIENCE YEAR 2023, VOLUME 27, ISSUE Issue 5, PAGES [3829 - 3836]
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© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence