This study investigates the effect of the inclination angle on the strength, deformation and failure characteristics of layered sandstone specimens with inclination angles prepared for uniaxial compression tests. The deformation distribution was analysed using digital image processing. The results reveal that the stress–strain curves of layered sandstone can be classified into distinct stages: initial compression; elastic deformation; inelastic and crack expansion; and post-peak failure. Compressive strength is significantly influenced by the inclination angle, displaying a right-biased ‘U’ shape across various angles, with the lowest strength observed at 75°. A similar left-biased ‘U’ trend is noted for elastic modulus and longitudinal wave velocity as the inclination varies. Digital image processing highlights significant differences in surface deformation with varying angles, primarily influenced by the bedding structure. Deformation concentrates in the bedding zones, identifying potential crack initiation and expansion. The failure mode is notably affected by the bedding structure, progressing from splitting tensile failure to single incline plane shear failure through the bedding structure and matrix, shear failure along the bedding structure, and X-conjugated shear and tensile failure as the inclination angle increases. This paper discusses the mechanical properties and failure mechanisms of layered sandstone based on these parameters and failure modes.
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Research Article|
January 07, 2025
Experimental study of the effect of the inclination angle on mechanical characteristics and failure modes of layered sandstone
Yongchuan Zhao;
Yongchuan Zhao
1
College of Civil Engineering and Architecture
, Hebei University
, Baoding, Hebei 071002, China
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Bang Lv;
Bang Lv
1
College of Civil Engineering and Architecture
, Hebei University
, Baoding, Hebei 071002, China
Search for other works by this author on:
Zhihao Xu;
Zhihao Xu
1
College of Civil Engineering and Architecture
, Hebei University
, Baoding, Hebei 071002, China
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Xing Zheng Wu
Xing Zheng Wu
*
1
College of Civil Engineering and Architecture
, Hebei University
, Baoding, Hebei 071002, China
*
Correspondence: [email protected]
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Yongchuan Zhao
1
College of Civil Engineering and Architecture
, Hebei University
, Baoding, Hebei 071002, China
Bang Lv
1
College of Civil Engineering and Architecture
, Hebei University
, Baoding, Hebei 071002, China
Zhihao Xu
1
College of Civil Engineering and Architecture
, Hebei University
, Baoding, Hebei 071002, China
Xing Zheng Wu
*
1
College of Civil Engineering and Architecture
, Hebei University
, Baoding, Hebei 071002, China
*
Correspondence: [email protected]
Publisher: Geological Society of London
Received:
29 May 2024
Revision Received:
07 Oct 2024
Accepted:
15 Nov 2024
First Online:
20 Nov 2024
Online ISSN: 2041-4803
Print ISSN: 1470-9236
Funding
- Funder(s):the Natural Science Foundation of Hebei Province of China
- Award Id(s): E2023201039
- Award Id(s):
- Funder(s):the Science and Technology Project of Hebei Education Department
- Award Id(s): QN2020260
- Award Id(s):
- Funder(s):High-level Talents Research Start‐up Project of Hebei University
- Award Id(s): 521100221025
- Award Id(s):
© 2025 The Author(s). Published by The Geological Society of London. All rights, including for text and data mining (TDM), artificial intelligence (AI) training, and similar technologies, are reserved. For permissions: https://www.lyellcollection.org/publishing-hub/permissions-policy. Publishing disclaimer: https://www.lyellcollection.org/publishing-hub/publishing-ethics
© 2025 The Author(s)
Quarterly Journal of Engineering Geology and Hydrogeology (2025) 58 (1): qjegh2024-085.
Article history
Received:
29 May 2024
Revision Received:
07 Oct 2024
Accepted:
15 Nov 2024
First Online:
20 Nov 2024
Citation
Yongchuan Zhao, Bang Lv, Zhihao Xu, Xing Zheng Wu; Experimental study of the effect of the inclination angle on mechanical characteristics and failure modes of layered sandstone. Quarterly Journal of Engineering Geology and Hydrogeology 2025;; 58 (1): qjegh2024–085. doi: https://doi.org/10.1144/qjegh2024-085
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