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Experimental Study on Fracture Characteristics of Rocks with Bent Cracks Under Saturated Conditions
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Yan MA1, 2, Zelin LIU2, Ze WANG1
Mining and Metallurgical Engineering | 2025, 45(4) : 22 - 27
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Mining and Metallurgical Engineering | 2025, 45(4): 22-27
• MINING •
Experimental Study on Fracture Characteristics of Rocks with Bent Cracks Under Saturated Conditions
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Yan MA1, 2, Zelin LIU2, Ze WANG1
Affiliations
  • 1.College of Applied Sciences, Taiyuan University of Science and Technology, Taiyuan 030024, Shanxi, China
  • 2.School of Civil Engineering, Central South University, Changsha 410075, Hunan, China
Published: 2025-08-01 doi: 10.3969/j.issn.0253-6099.2025.04.004
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To investigate the fracture characteristics of rocks with bent cracks under saturated condition, uniaxial compression tests were conducted for rock specimen with different inclination degrees and numbers of crack bends under saturated conditions to study load-displacement curves, peak strength, acoustic emission characteristics, crack initiation modes, and penetration modes of the rock specimen. The results show that the load-displacement curve of saturated rock specimen with bent cracks presents one-peak or double-peak shape, with peak strength increasing after an initial decreasing as the crack inclination angle becomes larger. The acoustic emission signals become stronger as the crack inclination angle becomes larger and the number of crack bends increases. Cracks mainly initiate at the tip and bends, and mainly penetrate directly or run without penetration.

rock mechanics  /  sandstone  /  fracture characteristics  /  saturated condition  /  bent crack  /  initiation mode  /  penetration mode
Yan MA, Zelin LIU, Ze WANG. Experimental Study on Fracture Characteristics of Rocks with Bent Cracks Under Saturated Conditions[J]. Mining and Metallurgical Engineering, 2025 , 45 (4) : 22 -27 . DOI: 10.3969/j.issn.0253-6099.2025.04.004
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Year 2025 volume 45 Issue 4
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Article Info
doi: 10.3969/j.issn.0253-6099.2025.04.004
  • Receive Date：2025-02-24
  • Online Date：2026-03-05
  • Published：2025-08-01
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  • Received：2025-02-24
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Affiliations
    1.College of Applied Sciences, Taiyuan University of Science and Technology, Taiyuan 030024, Shanxi, China
    2.School of Civil Engineering, Central South University, Changsha 410075, Hunan, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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