Enhancing shear stability in laminated rock masses: A comparative study of traditional and resilient rock bolts
The movement of rock mass along the shear surface induces axial and normal shear forces in rock bolts, necessitating enhancements to their shear performance. A novel resilient rock bolt has been developed to accommodate large shear deformations by incorporating an adaptive section near the shear sur...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-03-01
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| Series: | Results in Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590123025001227 |
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| author | Chang Zhou Chunni Han Chunye Ying Yaluo Mi Qiang Wang Tao Liu |
| author_facet | Chang Zhou Chunni Han Chunye Ying Yaluo Mi Qiang Wang Tao Liu |
| author_sort | Chang Zhou |
| collection | DOAJ |
| description | The movement of rock mass along the shear surface induces axial and normal shear forces in rock bolts, necessitating enhancements to their shear performance. A novel resilient rock bolt has been developed to accommodate large shear deformations by incorporating an adaptive section near the shear surface, based on plastic flow principles in gears and hinge connections. Multi-gears provide periodic resistance, enabling cyclical energy absorption and release. Two large physical model tests were conducted comparing ordinary and new resilient rock bolts, with vertical and horizontal soil pressures recorded. The results revealed that the new resilient rock bolt system operates through cycles of energy absorption, adaptation, and release. It exhibits smaller and more uniform stress compared to ordinary bolts and requires significantly larger shear displacement to fail, demonstrating superior co-deformation with the rock mass. Additionally, the new rock bolt minimizes prestress loss and more effectively transmits axial force to the stable rock layer. With a higher energy release coefficient (0.815) compared to others (<0.5), the new rock bolt substantially enhances the stability of the rock bolt system. This innovative design offers improved performance and reliability in rock mass stabilization. |
| format | Article |
| id | doaj-art-abb6b2857edd4513ad0197e74be307e6 |
| institution | Kabale University |
| issn | 2590-1230 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Engineering |
| spelling | doaj-art-abb6b2857edd4513ad0197e74be307e62025-01-23T05:27:40ZengElsevierResults in Engineering2590-12302025-03-0125104034Enhancing shear stability in laminated rock masses: A comparative study of traditional and resilient rock boltsChang Zhou0Chunni Han1Chunye Ying2Yaluo Mi3Qiang Wang4Tao Liu5Correspondence author at: No. 1 Daxue Road, Xuzhou City, Jiangsu Province, PR China.; School of Resources and Geosciences, China University of Mining and Technology, Xuzhou, Jiangsu 221116, PR China; Badong National Observation and Research Station of Geohazards, China University of Geosciences, Wuhan 430074, PR ChinaSchool of Resources and Geosciences, China University of Mining and Technology, Xuzhou, Jiangsu 221116, PR ChinaSchool of Geological Engineering, Qinghai University, Xining 810016, PR ChinaSchool of Resources and Geosciences, China University of Mining and Technology, Xuzhou, Jiangsu 221116, PR ChinaSchool of Civil Engineering and Mechanics, Yanshan University, Qinhuangdao, Hebei 066004, PR ChinaXinjiang Bureau of Geology and Mineral Resources Exploration and Development, The Second Hydrological Engineering Geological Brigade, Changji, Xinjiang 831100, PR China; Xinjiang Huaguang Geological Survey Co., Ltd., Changji, Xinjiang 831100, PR ChinaThe movement of rock mass along the shear surface induces axial and normal shear forces in rock bolts, necessitating enhancements to their shear performance. A novel resilient rock bolt has been developed to accommodate large shear deformations by incorporating an adaptive section near the shear surface, based on plastic flow principles in gears and hinge connections. Multi-gears provide periodic resistance, enabling cyclical energy absorption and release. Two large physical model tests were conducted comparing ordinary and new resilient rock bolts, with vertical and horizontal soil pressures recorded. The results revealed that the new resilient rock bolt system operates through cycles of energy absorption, adaptation, and release. It exhibits smaller and more uniform stress compared to ordinary bolts and requires significantly larger shear displacement to fail, demonstrating superior co-deformation with the rock mass. Additionally, the new rock bolt minimizes prestress loss and more effectively transmits axial force to the stable rock layer. With a higher energy release coefficient (0.815) compared to others (<0.5), the new rock bolt substantially enhances the stability of the rock bolt system. This innovative design offers improved performance and reliability in rock mass stabilization.http://www.sciencedirect.com/science/article/pii/S2590123025001227Resilient rock boltEnergy-absorbing-releasingReinforcement mechanismCo-deformation |
| spellingShingle | Chang Zhou Chunni Han Chunye Ying Yaluo Mi Qiang Wang Tao Liu Enhancing shear stability in laminated rock masses: A comparative study of traditional and resilient rock bolts Results in Engineering Resilient rock bolt Energy-absorbing-releasing Reinforcement mechanism Co-deformation |
| title | Enhancing shear stability in laminated rock masses: A comparative study of traditional and resilient rock bolts |
| title_full | Enhancing shear stability in laminated rock masses: A comparative study of traditional and resilient rock bolts |
| title_fullStr | Enhancing shear stability in laminated rock masses: A comparative study of traditional and resilient rock bolts |
| title_full_unstemmed | Enhancing shear stability in laminated rock masses: A comparative study of traditional and resilient rock bolts |
| title_short | Enhancing shear stability in laminated rock masses: A comparative study of traditional and resilient rock bolts |
| title_sort | enhancing shear stability in laminated rock masses a comparative study of traditional and resilient rock bolts |
| topic | Resilient rock bolt Energy-absorbing-releasing Reinforcement mechanism Co-deformation |
| url | http://www.sciencedirect.com/science/article/pii/S2590123025001227 |
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