A Study on the Relationship Between the Mechanical Properties and Wave Propagation Characteristics of Fractured Rock Under Shearing
Journal
Lecture Notes in Civil Engineering
Journal Volume
784 LNCE
Start Page
37
End Page
48
ISSN
23662557
ISBN (of the container)
9789819542628
Date Issued
2026
Author(s)
Abstract
Rock masses often exhibit intricate weakness planes that often interconnect to form an impenetrable rock bridge, potentially impacting the stability of the rock mass. To understand how fractures develop under sustained shear stress and whether changes in the wave propagation characteristics can reflect the mechanical behavior of fractured rock, this study integrates direct shear tests on fractured rock specimens with ultrasonic measurements. By analyzing the shear stress–shear displacement curves and wave velocity variations obtained from the mechanical tests, preliminary insights into the relationship between initial failure behavior and crack development before reaching the peak shear strength of the rock mass have been gained. The following findings are obtained: (1) The initial failure shear strength (τi) was approximately 0.5–0.7 times the peak shear strength (τp), and the initial failure shear displacement (si) was approximately 0.5–0.6 times the peak shear displacement (sp). (2) As the length of the rock bridge increased, the initial failure shear strength (τi), the initial failure shear displacement (si), and the peak shear displacement (sp) also increased. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2026.
Event(s)
13th Asian Rock Mechanics Symposium, ARMS 2024
Subjects
Direct shear test
Rock bridge
Ultrasonic velocity
Publisher
Springer Science and Business Media Deutschland GmbH
Description
13th Asian Rock Mechanics Symposium, ARMS 2024, 22 September 2024 through 27 September 2024, New Delhi
Type
conference paper