Loading directionality of single-through fissure effects on mechanical properties of grouted rock DOI
Jiangyu Wu, Fuxiang Zhang, Zhenhua Li

et al.

Physics of Fluids, Journal Year: 2025, Volume and Issue: 37(5)

Published: May 1, 2025

Grouting reinforcement of rock masses containing numerous joints and fissures is significant for ensuring the safety deep mining underground structures. To quantify influence fissure loading directionality on mechanical properties grouted rocks, Brazilian splitting tests rocks were conducted with acoustic emission digital image correlation monitoring. A corresponding three-dimensional discrete element model was constructed to reproduce crack force chain evolution laws during process in tests. The failure mechanism under different angles between direction through analyzed. results show that initially increase then decrease as angle increases, transitions from being dominated by interface fracture medium splitting. strain-concentrated zones all are located along middle part specimen. As zone shows a inclination. When small, cracks tend extend propagate more readily at interface. number induced tensile-shear gradually decreases. main load-bearing chains also an offset, which highly consistent evolution. distribution high-strength distinctly directional, tendency aligning strain field. specimen exhibits higher when uniform larger.

Language: Английский

Loading directionality of single-through fissure effects on mechanical properties of grouted rock DOI
Jiangyu Wu, Fuxiang Zhang, Zhenhua Li

et al.

Physics of Fluids, Journal Year: 2025, Volume and Issue: 37(5)

Published: May 1, 2025

Grouting reinforcement of rock masses containing numerous joints and fissures is significant for ensuring the safety deep mining underground structures. To quantify influence fissure loading directionality on mechanical properties grouted rocks, Brazilian splitting tests rocks were conducted with acoustic emission digital image correlation monitoring. A corresponding three-dimensional discrete element model was constructed to reproduce crack force chain evolution laws during process in tests. The failure mechanism under different angles between direction through analyzed. results show that initially increase then decrease as angle increases, transitions from being dominated by interface fracture medium splitting. strain-concentrated zones all are located along middle part specimen. As zone shows a inclination. When small, cracks tend extend propagate more readily at interface. number induced tensile-shear gradually decreases. main load-bearing chains also an offset, which highly consistent evolution. distribution high-strength distinctly directional, tendency aligning strain field. specimen exhibits higher when uniform larger.

Language: Английский

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