A new deformable cable for rock support in high stress tunnel: Steel pipe shrinkable energy-absorbing cable
High stress in surrounding rock will lead to serious problems, e.g., rock burst in hard rock and large deformation in soft rock. The applied support system under high in-situ stress conditions should be able to carry high load and also accommodate large deformation without experiencing severe damage...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-08-01
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| Series: | International Journal of Mining Science and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2095268624001137 |
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| author | Xuezhen Wu Mingzhu Zhao Qing Ye Yujing Jiang Tao Deng Hanfang Zheng Gang Wang Zhenchang Guan |
| author_facet | Xuezhen Wu Mingzhu Zhao Qing Ye Yujing Jiang Tao Deng Hanfang Zheng Gang Wang Zhenchang Guan |
| author_sort | Xuezhen Wu |
| collection | DOAJ |
| description | High stress in surrounding rock will lead to serious problems, e.g., rock burst in hard rock and large deformation in soft rock. The applied support system under high in-situ stress conditions should be able to carry high load and also accommodate large deformation without experiencing severe damage. In this paper, a specially designed energy-absorbing component for rock bolt and cable that can solve the above problems was proposed. The energy-absorbing component can provide support resistance by plastic deformation of the metal including constraint annulus and compression pipe. For practical engineering, two forms were proposed. One was installed in the surrounding rock by reaming, and the other was installed directly outside the surrounding rock. During the dilation of the surrounding rock, the relative displacement of constraint annulus and compression pipe occurs, resulting in deformation resistance. Deformation resistance is transmitted to the rock bolt or cable, providing support resistance. The lab test and numerical simulation showed that the energy-absorbing component can perfectly achieve the large deformation effect, the deformation amount is as high as 694 mm, and the bearing capacity is stable at 367 kN. The field application tests were carried out in the mining roadway of Xinjulong coal mine, and the results showed that the new type of cable can ensure itself not to break under the condition of large deformation of the surrounding rock. The energy-absorbing component has the superiorities of performing large constant resistance and controllable deformation to effectively control the unpredictable disasters such as large deformation in soft rock and rock burst in hard rock encountered in deep strata. |
| format | Article |
| id | doaj-art-be812d8859f244eabd3236a20931bc7d |
| institution | OA Journals |
| issn | 2095-2686 |
| language | English |
| publishDate | 2024-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | International Journal of Mining Science and Technology |
| spelling | doaj-art-be812d8859f244eabd3236a20931bc7d2025-08-20T02:17:34ZengElsevierInternational Journal of Mining Science and Technology2095-26862024-08-013481083109310.1016/j.ijmst.2024.07.015A new deformable cable for rock support in high stress tunnel: Steel pipe shrinkable energy-absorbing cableXuezhen Wu0Mingzhu Zhao1Qing Ye2Yujing Jiang3Tao Deng4Hanfang Zheng5Gang Wang6Zhenchang Guan7College of Civil Engineering, Fuzhou University, Fuzhou 350108, ChinaCollege of Civil Engineering, Fuzhou University, Fuzhou 350108, ChinaCollege of Civil Engineering, Fuzhou University, Fuzhou 350108, ChinaCollege of Civil Engineering, Fuzhou University, Fuzhou 350108, China; School of Engineering, Nagasaki University, Nagasaki 852-8521, JapanCollege of Civil Engineering, Fuzhou University, Fuzhou 350108, ChinaCollege of Civil Engineering, Fuzhou University, Fuzhou 350108, China; School of Engineering, Nagasaki University, Nagasaki 852-8521, JapanKey Laboratory of Underground Engineering, Fujian University of Technology, Fuzhou 350118, ChinaCollege of Civil Engineering, Fuzhou University, Fuzhou 350108, China; Corresponding author.High stress in surrounding rock will lead to serious problems, e.g., rock burst in hard rock and large deformation in soft rock. The applied support system under high in-situ stress conditions should be able to carry high load and also accommodate large deformation without experiencing severe damage. In this paper, a specially designed energy-absorbing component for rock bolt and cable that can solve the above problems was proposed. The energy-absorbing component can provide support resistance by plastic deformation of the metal including constraint annulus and compression pipe. For practical engineering, two forms were proposed. One was installed in the surrounding rock by reaming, and the other was installed directly outside the surrounding rock. During the dilation of the surrounding rock, the relative displacement of constraint annulus and compression pipe occurs, resulting in deformation resistance. Deformation resistance is transmitted to the rock bolt or cable, providing support resistance. The lab test and numerical simulation showed that the energy-absorbing component can perfectly achieve the large deformation effect, the deformation amount is as high as 694 mm, and the bearing capacity is stable at 367 kN. The field application tests were carried out in the mining roadway of Xinjulong coal mine, and the results showed that the new type of cable can ensure itself not to break under the condition of large deformation of the surrounding rock. The energy-absorbing component has the superiorities of performing large constant resistance and controllable deformation to effectively control the unpredictable disasters such as large deformation in soft rock and rock burst in hard rock encountered in deep strata.http://www.sciencedirect.com/science/article/pii/S2095268624001137Energy-absorbing cableNumerical simulationLab testLoad capacityUltimate displacement |
| spellingShingle | Xuezhen Wu Mingzhu Zhao Qing Ye Yujing Jiang Tao Deng Hanfang Zheng Gang Wang Zhenchang Guan A new deformable cable for rock support in high stress tunnel: Steel pipe shrinkable energy-absorbing cable International Journal of Mining Science and Technology Energy-absorbing cable Numerical simulation Lab test Load capacity Ultimate displacement |
| title | A new deformable cable for rock support in high stress tunnel: Steel pipe shrinkable energy-absorbing cable |
| title_full | A new deformable cable for rock support in high stress tunnel: Steel pipe shrinkable energy-absorbing cable |
| title_fullStr | A new deformable cable for rock support in high stress tunnel: Steel pipe shrinkable energy-absorbing cable |
| title_full_unstemmed | A new deformable cable for rock support in high stress tunnel: Steel pipe shrinkable energy-absorbing cable |
| title_short | A new deformable cable for rock support in high stress tunnel: Steel pipe shrinkable energy-absorbing cable |
| title_sort | new deformable cable for rock support in high stress tunnel steel pipe shrinkable energy absorbing cable |
| topic | Energy-absorbing cable Numerical simulation Lab test Load capacity Ultimate displacement |
| url | http://www.sciencedirect.com/science/article/pii/S2095268624001137 |
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