Stress corrosion behavior and mechanism of cable bolts under the influence of mine water
Cable bolts are the primary support material for controlling the surrounding rock in underground coal mine roadways. During their service life, cable bolts not only bear high stress loads but are also affected by the harsh corrosive environment. Consequently, stress corrosion cracking (SCC) resultin...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Journal of China Coal Society
2025-07-01
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| Series: | Meitan xuebao |
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| Online Access: | http://www.mtxb.com.cn/article/doi/10.13225/j.cnki.jccs.2025.0157 |
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| author | Yongliang LI Renshu YANG Xianglin DAI Shaojie LU Zhiyong LIU Liang GUO Jiangzhen YUAN Yongxin CHENG Hailong DU |
| author_facet | Yongliang LI Renshu YANG Xianglin DAI Shaojie LU Zhiyong LIU Liang GUO Jiangzhen YUAN Yongxin CHENG Hailong DU |
| author_sort | Yongliang LI |
| collection | DOAJ |
| description | Cable bolts are the primary support material for controlling the surrounding rock in underground coal mine roadways. During their service life, cable bolts not only bear high stress loads but are also affected by the harsh corrosive environment. Consequently, stress corrosion cracking (SCC) resulting from the coupling effect of stress and corrosion poses a significant threat to their service reliability in underground coal mines. Among various factors, mine water is a key factor that induces cable bolt corrosion. To investigate the influence of different types of mine water on the stress corrosion behavior of cable bolts, electrochemical impedance spectroscopy (EIS), electrochemical polarization technology, laboratory immersion accelerated corrosion tests and microscopic morphology scanning methods were used to characterize the electrochemical behavior and corrosion evolution characteristics of cable bolts under varying pH levels, SO42− and Cl− concentrations in mine water. Overall, the study revealed the SCC mechanism of cable bolts and elucidated the fracture modes of SCC. The results indicate that within the pH range of 2 to 10, the corrosion rate of the cable bolts initially decreases and then increases as the pH increases. Furthermore, pH influences the type of corrosion reactions on the cable bolts. Under acidic conditions, the nucleation of SCC cracks is more likely to occur. The influence of SO42− and Cl− concentrations in mine water on cable bolt corrosion follows a similar pattern: as the ion concentrations increase, the corrosion rate gradually increases, facilitating SCC crack initiation. However, the sensitivity of the SCC rate to concentration changes varies across different ion concentration ranges. Anodic dissolution and hydrogen-induced cracking are the two primary mechanisms for cable bolt SCC. The initiation of SCC cracks in cable bolts occurs through three stages: pit initiation, pit growth, and crack nucleation. The fracture surface of the SCC failure of cable bolts exhibits a stepped failure mode, with three typical regions: the crack initiation zone, propagation zone, and final fracture zone. Finally, based on the three dimensions of "material, environment, and stress," control strategies are proposed to prevent cable bolt SCC. |
| format | Article |
| id | doaj-art-cf1cfdc473e34696ad7e9e97ee4aff0e |
| institution | Kabale University |
| issn | 0253-9993 |
| language | zho |
| publishDate | 2025-07-01 |
| publisher | Editorial Office of Journal of China Coal Society |
| record_format | Article |
| series | Meitan xuebao |
| spelling | doaj-art-cf1cfdc473e34696ad7e9e97ee4aff0e2025-08-20T03:59:30ZzhoEditorial Office of Journal of China Coal SocietyMeitan xuebao0253-99932025-07-015073424344010.13225/j.cnki.jccs.2025.01572025-0157Stress corrosion behavior and mechanism of cable bolts under the influence of mine waterYongliang LI0Renshu YANG1Xianglin DAI2Shaojie LU3Zhiyong LIU4Liang GUO5Jiangzhen YUAN6Yongxin CHENG7Hailong DU8School of Energy and Mining Engineering, China University of Mining & Technology-Beijing, Beijing 100083, ChinaResearch Institute of Macro-Safety Science, University of Science and Technology Beijing, Beijing 100083, ChinaSchool of Energy and Mining Engineering, China University of Mining & Technology-Beijing, Beijing 100083, ChinaSchool of Energy and Mining Engineering, China University of Mining & Technology-Beijing, Beijing 100083, ChinaInstitute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, ChinaResearch Institute of Macro-Safety Science, University of Science and Technology Beijing, Beijing 100083, ChinaSchool of Energy and Mining Engineering, China University of Mining & Technology-Beijing, Beijing 100083, ChinaJinneng Holding Equipment Manufacturing Group, Jincheng 048006, ChinaJinneng Holding Equipment Manufacturing Group, Jincheng 048006, ChinaCable bolts are the primary support material for controlling the surrounding rock in underground coal mine roadways. During their service life, cable bolts not only bear high stress loads but are also affected by the harsh corrosive environment. Consequently, stress corrosion cracking (SCC) resulting from the coupling effect of stress and corrosion poses a significant threat to their service reliability in underground coal mines. Among various factors, mine water is a key factor that induces cable bolt corrosion. To investigate the influence of different types of mine water on the stress corrosion behavior of cable bolts, electrochemical impedance spectroscopy (EIS), electrochemical polarization technology, laboratory immersion accelerated corrosion tests and microscopic morphology scanning methods were used to characterize the electrochemical behavior and corrosion evolution characteristics of cable bolts under varying pH levels, SO42− and Cl− concentrations in mine water. Overall, the study revealed the SCC mechanism of cable bolts and elucidated the fracture modes of SCC. The results indicate that within the pH range of 2 to 10, the corrosion rate of the cable bolts initially decreases and then increases as the pH increases. Furthermore, pH influences the type of corrosion reactions on the cable bolts. Under acidic conditions, the nucleation of SCC cracks is more likely to occur. The influence of SO42− and Cl− concentrations in mine water on cable bolt corrosion follows a similar pattern: as the ion concentrations increase, the corrosion rate gradually increases, facilitating SCC crack initiation. However, the sensitivity of the SCC rate to concentration changes varies across different ion concentration ranges. Anodic dissolution and hydrogen-induced cracking are the two primary mechanisms for cable bolt SCC. The initiation of SCC cracks in cable bolts occurs through three stages: pit initiation, pit growth, and crack nucleation. The fracture surface of the SCC failure of cable bolts exhibits a stepped failure mode, with three typical regions: the crack initiation zone, propagation zone, and final fracture zone. Finally, based on the three dimensions of "material, environment, and stress," control strategies are proposed to prevent cable bolt SCC.http://www.mtxb.com.cn/article/doi/10.13225/j.cnki.jccs.2025.0157cable boltsmine waterelectrochemistrystress corrosion crackingcontrol strategies |
| spellingShingle | Yongliang LI Renshu YANG Xianglin DAI Shaojie LU Zhiyong LIU Liang GUO Jiangzhen YUAN Yongxin CHENG Hailong DU Stress corrosion behavior and mechanism of cable bolts under the influence of mine water Meitan xuebao cable bolts mine water electrochemistry stress corrosion cracking control strategies |
| title | Stress corrosion behavior and mechanism of cable bolts under the influence of mine water |
| title_full | Stress corrosion behavior and mechanism of cable bolts under the influence of mine water |
| title_fullStr | Stress corrosion behavior and mechanism of cable bolts under the influence of mine water |
| title_full_unstemmed | Stress corrosion behavior and mechanism of cable bolts under the influence of mine water |
| title_short | Stress corrosion behavior and mechanism of cable bolts under the influence of mine water |
| title_sort | stress corrosion behavior and mechanism of cable bolts under the influence of mine water |
| topic | cable bolts mine water electrochemistry stress corrosion cracking control strategies |
| url | http://www.mtxb.com.cn/article/doi/10.13225/j.cnki.jccs.2025.0157 |
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