Study on the Mechanical Properties and Degradation Mechanisms of Damaged Rock Under the Influence of Liquid Saturation
To investigate the degradation mechanisms of the surrounding rock in abandoned mine roadways used for oil storage, this study combined uniaxial compression tests with digital image correlation (DIC), scanning electron microscopy (SEM), and other techniques to analyze the evolution of the rock mechan...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-06-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/15/13/7054 |
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| author | Bowen Wu Jucai Chang Jianbiao Bai Chao Qi Dingchao Chen |
| author_facet | Bowen Wu Jucai Chang Jianbiao Bai Chao Qi Dingchao Chen |
| author_sort | Bowen Wu |
| collection | DOAJ |
| description | To investigate the degradation mechanisms of the surrounding rock in abandoned mine roadways used for oil storage, this study combined uniaxial compression tests with digital image correlation (DIC), scanning electron microscopy (SEM), and other techniques to analyze the evolution of the rock mechanical properties under the coupled effects of oil–water soaking and initial damage. The results indicate that oil–water soaking induces the loss of silicon elements and the deterioration of microstructure, leading to surface peeling, crack propagation, and increased porosity of the sample. The compressive strength decreases linearly with the soaking time. Acoustic emission (AE) monitoring showed that after 24 h of soaking, the maximum ringing count rate and cumulative count decreased by 81.7% and 80.4%, respectively, compared to the dry state. As the liquid saturation increases, the failure mode transitions from tension dominated to shear failure. The synergistic effect of initial damage and oil–water erosion weakens the rock’s energy storage capacity, with the energy storage limit decreasing by 45.6%, leading to reduced resistance to external forces. |
| format | Article |
| id | doaj-art-427fecb09e7f4d38bc84733c1edf5da7 |
| institution | Kabale University |
| issn | 2076-3417 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj-art-427fecb09e7f4d38bc84733c1edf5da72025-08-20T03:50:17ZengMDPI AGApplied Sciences2076-34172025-06-011513705410.3390/app15137054Study on the Mechanical Properties and Degradation Mechanisms of Damaged Rock Under the Influence of Liquid SaturationBowen Wu0Jucai Chang1Jianbiao Bai2Chao Qi3Dingchao Chen4School of Mining Engineering, Anhui University of Science and Technology, Huainan 232001, ChinaSchool of Mining Engineering, Anhui University of Science and Technology, Huainan 232001, ChinaState Key Laboratory for Fine Exploration and Intelligent Development of Coal Resources, China University of Mining and Technology, Xuzhou 221116, ChinaSchool of Mining Engineering, Anhui University of Science and Technology, Huainan 232001, ChinaSchool of Mines, China University of Mining and Technology, Xuzhou 221116, ChinaTo investigate the degradation mechanisms of the surrounding rock in abandoned mine roadways used for oil storage, this study combined uniaxial compression tests with digital image correlation (DIC), scanning electron microscopy (SEM), and other techniques to analyze the evolution of the rock mechanical properties under the coupled effects of oil–water soaking and initial damage. The results indicate that oil–water soaking induces the loss of silicon elements and the deterioration of microstructure, leading to surface peeling, crack propagation, and increased porosity of the sample. The compressive strength decreases linearly with the soaking time. Acoustic emission (AE) monitoring showed that after 24 h of soaking, the maximum ringing count rate and cumulative count decreased by 81.7% and 80.4%, respectively, compared to the dry state. As the liquid saturation increases, the failure mode transitions from tension dominated to shear failure. The synergistic effect of initial damage and oil–water erosion weakens the rock’s energy storage capacity, with the energy storage limit decreasing by 45.6%, leading to reduced resistance to external forces.https://www.mdpi.com/2076-3417/15/13/7054abandoned coal minesubterranean storagedamaged rockoil–water immersionfailure mechanism |
| spellingShingle | Bowen Wu Jucai Chang Jianbiao Bai Chao Qi Dingchao Chen Study on the Mechanical Properties and Degradation Mechanisms of Damaged Rock Under the Influence of Liquid Saturation Applied Sciences abandoned coal mine subterranean storage damaged rock oil–water immersion failure mechanism |
| title | Study on the Mechanical Properties and Degradation Mechanisms of Damaged Rock Under the Influence of Liquid Saturation |
| title_full | Study on the Mechanical Properties and Degradation Mechanisms of Damaged Rock Under the Influence of Liquid Saturation |
| title_fullStr | Study on the Mechanical Properties and Degradation Mechanisms of Damaged Rock Under the Influence of Liquid Saturation |
| title_full_unstemmed | Study on the Mechanical Properties and Degradation Mechanisms of Damaged Rock Under the Influence of Liquid Saturation |
| title_short | Study on the Mechanical Properties and Degradation Mechanisms of Damaged Rock Under the Influence of Liquid Saturation |
| title_sort | study on the mechanical properties and degradation mechanisms of damaged rock under the influence of liquid saturation |
| topic | abandoned coal mine subterranean storage damaged rock oil–water immersion failure mechanism |
| url | https://www.mdpi.com/2076-3417/15/13/7054 |
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