 | | Mechanics of Solids
A Journal of Russian Academy of Sciences | | Founded
in January 1966
Issued 6 times a year
Print ISSN 0025-6544
Online ISSN 1934-7936 |
Archive of Issues
| Total articles in the database: | | 12949 |
| In Russian (Èçâ. ĐÀÍ. ̀̉̉): | | 8096
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| In English (Mech. Solids): | | 4853 |
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| Houxu Huang, Yongxiang Cai, Yi Cai, Chao Yan, Shuai Yin, and Huazhang Shen, "Mechanism Underlying Rock Core Disking Phenomenon—A Theoretical Investigation," Mech. Solids. 59 (4), 2242-2253 (2024) |
| Year |
2024 |
Volume |
59 |
Number |
4 |
Pages |
2242-2253 |
| DOI |
10.1134/S0025654424604300 |
| Title |
Mechanism Underlying Rock Core Disking Phenomenon—A Theoretical Investigation |
| Author(s) |
Houxu Huang (Anhui Provincial Key Laboratory of Intelligent Underground Detection, Anhui Jianzhu University, Hefei, 230601 China; College of Civil Engineering, Anhui Jianzhu University, Hefei, 230601 China)
Yongxiang Cai (Anhui Provincial Key Laboratory of Intelligent Underground Detection, Anhui Jianzhu University, Hefei, 230601 China; College of Civil Engineering, Anhui Jianzhu University, Hefei, 230601 China, caiyongxiang@ahjzu.edu.cn)
Yi Cai (Anhui Provincial Key Laboratory of Intelligent Underground Detection, Anhui Jianzhu University, Hefei, 230601 China; College of Civil Engineering, Anhui Jianzhu University, Hefei, 230601 China)
Chao Yan (Anhui Provincial Key Laboratory of Intelligent Underground Detection, Anhui Jianzhu University, Hefei, 230601 China)
Shuai Yin (Anhui Provincial Key Laboratory of Intelligent Underground Detection, Anhui Jianzhu University, Hefei, 230601 China; College of Civil Engineering, Anhui Jianzhu University, Hefei, 230601 China)
Huazhang Shen (Anhui Provincial Key Laboratory of Intelligent Underground Detection, Anhui Jianzhu University, Hefei, 230601 China; College of Civil Engineering, Anhui Jianzhu University, Hefei, 230601 China) |
| Abstract |
In this paper, the rapid axial unloading induced spontaneously rock core disking (or the interval fracture of rock pillar) is regarded as a self-sustained fracture. Mechanical model of rock pillar with initial stress subjected to rapid axial unloading under constant radial stress is established, the process of rock core disking is theoretically reproduced, and mechanism underlying the fracture process is analyzed. The expression that could not only reflect the relationship between the dimensionless core thickness d/D and the dimensionless initial axial stress σ1/σt, but also could reflect the influence factors on critical stress of rock core disking is deduced. Among the influence factors, the residual energy ratio is the most important one, the critical stress reaches its minimum value if KI=KIC. By referring the field test data from URL of Canada in the existing study, the expressions for granite and granodiorite with parameters determined are presented, the residual energy ratio and critical stress of rock core disking are also calculated. |
| Keywords |
rock core disking, rapid axial unloading, fracture process, dimensionless relationships, influence factors |
| Received |
14 June 2024 | Revised |
16 July 2024 | Accepted |
30 July 2024 |
| Link to Fulltext |
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