Investigation and Numerical Simulation of the Influence of Fracture Inclination on rock Mass Strength and Failure Pattern

DOI

10.2991/978-94-6463-398-6_44How to use a DOI?

Keywords

Damaged rock; Mechanical properties; Numerical simulation; Angle of fracture

Abstract

The mechanical properties and failure patterns of rock mass are greatly influenced by the presence of numerous initial cracks. This study aims to investigate the impact of crack inclination angle on the strength of damaged rock mass. To achieve this, rock specimens with cracks inclined at 0°, 30°, 45°, 60°, 75°, and 90° were prepared, and laboratory mechanical tests were conducted. The tests examined the influence of different crack inclination angles on rock strength and failure patterns. Additionally, numerical simulations were performed to study the effect of crack angle on stress distribution and deformation size during axial loading. The analysis of the failure patterns of rock mass under different crack angles revealed that the initial cracks weaken the strength of the rock mass. Moreover, the weakening effect decreases as the crack angle increases. The numerical simulations showed that the weakening effect is caused by significant stress concentration at the crack tip, leading to crack propagation from the crack tips. The simulation analysis further demonstrated that crack development aligns with the stress distribution in rock mass, starting from the crack tip where the stress is highest and propagating along the direction of internal stress until the specimen is ultimately destroyed.

Copyright

© 2024 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Ziyu Fu
AU  - Zhengyuan Zhang
AU  - Zixuan Li
AU  - Guangyuan Wang
AU  - Hongwei Wang
PY  - 2024
DA  - 2024/04/24
TI  - Investigation and Numerical Simulation of the Influence of Fracture Inclination on rock Mass Strength and Failure Pattern
BT  - Proceedings of the 2023 5th International Conference on Hydraulic, Civil and Construction Engineering (HCCE 2023)
PB  - Atlantis Press
SP  - 464
EP  - 472
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-398-6_44
DO  - 10.2991/978-94-6463-398-6_44
ID  - Fu2024
ER  -