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Burst characteristics of rock under a high internal air pressure
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Shao-hua LIU1, 2, Cai-chu XIA1, 2, Ying-jun XU3, Chen XU1, 2
Rock and Soil Mechanics | 2025, 46(11) : 3431 - 3440
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Rock and Soil Mechanics | 2025, 46(11): 3431-3440
• Fundamental Theory and Experimental Research •
Burst characteristics of rock under a high internal air pressure
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Shao-hua LIU1, 2, Cai-chu XIA1, 2, Ying-jun XU3, Chen XU1, 2
Affiliations
  • 1.Institute of Rock Mechanics, Ningbo University, Ningbo, Zhejiang 315000, China
  • 2.Ningbo Key Laboratory of Energy Geostructure, Ningbo University, Ningbo, Zhejiang 315000, China
  • 3.Energy Development Research Institute Co., Ltd., CSG, Guangzhou, Guangdong 510700, China
Published: 2025-11-14 doi: 10.16285/j.rsm.2024.1470
Outline
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In rock-lined caverns with compressed air energy storage (CAES), the hoop tensile strength of rock is an important parameter for calculating the ultimate bearing capacity and long-term stability of the cavern. The existing methods for measuring the tensile strength of rock are direct tensile tests or indirect tensile tests, such as Brazilian splitting and point load bending tests, which cannot truly reflect the circumferential stress of rock under high internal air pressure. Based on this, a new measurement method is proposed. By injecting high-pressure air into the drilled rock sample, the rock burst pressure is obtained. Then a calculation formula for the rock tensile strength is proposed considering the rock pore stress. In the experiments, the inflation rate and the temperature are changed, and it is found that the rock burst pressure is negatively correlated with the inflation rate and positively correlated with the temperature. It is found that when the number of cycles is relatively small (n≤100), the rock burst pressure is positively correlated with the number of cycles. The results can guide the design and calculation of rock-lined caverns for CAES, which is conducive to the promotion and application of CAES technology and has important engineering application value.

compressed air energy storage  /  burst pressure  /  tensile strength  /  pore stress
Shao-hua LIU, Cai-chu XIA, Ying-jun XU, Chen XU. Burst characteristics of rock under a high internal air pressure[J]. Rock and Soil Mechanics, 2025 , 46 (11) : 3431 -3440 . DOI: 10.16285/j.rsm.2024.1470
Funding
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  • National Key Research and Development Program, Intergovernmental Key Special Project(2024YFE0105800)
  • National Natural Science Foundation of China(U23B20145; 52278402)
  • Core Research Project of China Electric Construction Group(DJ-HXGG-2023-09)
Appendix
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Year 2025 volume 46 Issue 11
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81
32
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Article Info
doi: 10.16285/j.rsm.2024.1470
  • Receive Date：2024-11-28
  • Online Date：2026-03-27
  • Published：2025-11-14
Article Data
Affiliations
History
  • Received：2024-11-28
  • Accepted：2025-04-29
Funding
National Key Research and Development Program, Intergovernmental Key Special Project(2024YFE0105800)
National Natural Science Foundation of China(U23B20145; 52278402)
Core Research Project of China Electric Construction Group(DJ-HXGG-2023-09)
Affiliations
    1.Institute of Rock Mechanics, Ningbo University, Ningbo, Zhejiang 315000, China
    2.Ningbo Key Laboratory of Energy Geostructure, Ningbo University, Ningbo, Zhejiang 315000, China
    3.Energy Development Research Institute Co., Ltd., CSG, Guangzhou, Guangdong 510700, China
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Citations
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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