Effects of High-Pretension Support System on Soft Rock Large Deformation of Perpendicularly Crossing Tunnels
The control mechanism of prestressed support system is studied by means of three-dimensional discrete element numerical simulation, theoretical analysis, and field measurement. The actual project is selected to analyze, and the control effect is demonstrated. The theoretical analysis results show th...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2020/6669120 |
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| _version_ | 1832547701212839936 |
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| author | Li Gan Ma Weibin Tian Siming Zhou Wenhao |
| author_facet | Li Gan Ma Weibin Tian Siming Zhou Wenhao |
| author_sort | Li Gan |
| collection | DOAJ |
| description | The control mechanism of prestressed support system is studied by means of three-dimensional discrete element numerical simulation, theoretical analysis, and field measurement. The actual project is selected to analyze, and the control effect is demonstrated. The theoretical analysis results show that the prestressed support can improve the self-bearing capacity of surrounding rock, which is conducive to the stability of the surrounding rock. The numerical calculation shows that, under the control of the long and short cables, the prestress can spread effectively and form two bearing arches. The deformation is difficult to control, which is in the arch crown and the arch shoulder of the tunnel intersection. However, the deformation of the surrounding rock decreases with the increase of prestress. Through the analysis of the measured results, it shows that the pretension support design scheme can effectively control the large deformation of the surrounding rock. |
| format | Article |
| id | doaj-art-500bc5ac85554927ad13cb5e704edd24 |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-500bc5ac85554927ad13cb5e704edd242025-02-03T06:43:36ZengWileyAdvances in Civil Engineering1687-80861687-80942020-01-01202010.1155/2020/66691206669120Effects of High-Pretension Support System on Soft Rock Large Deformation of Perpendicularly Crossing TunnelsLi Gan0Ma Weibin1Tian Siming2Zhou Wenhao3State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, ChinaChina Academy of Railway Sciences, Railway Construction Research Institute of China Academy of Railway Sciences Group Co., Ltd., Beijing 100084, ChinaChina Railway Economic and Planning Research Institute, Beijing 100084, ChinaChina Academy of Railway Sciences, Railway Construction Research Institute of China Academy of Railway Sciences Group Co., Ltd., Beijing 100084, ChinaThe control mechanism of prestressed support system is studied by means of three-dimensional discrete element numerical simulation, theoretical analysis, and field measurement. The actual project is selected to analyze, and the control effect is demonstrated. The theoretical analysis results show that the prestressed support can improve the self-bearing capacity of surrounding rock, which is conducive to the stability of the surrounding rock. The numerical calculation shows that, under the control of the long and short cables, the prestress can spread effectively and form two bearing arches. The deformation is difficult to control, which is in the arch crown and the arch shoulder of the tunnel intersection. However, the deformation of the surrounding rock decreases with the increase of prestress. Through the analysis of the measured results, it shows that the pretension support design scheme can effectively control the large deformation of the surrounding rock.http://dx.doi.org/10.1155/2020/6669120 |
| spellingShingle | Li Gan Ma Weibin Tian Siming Zhou Wenhao Effects of High-Pretension Support System on Soft Rock Large Deformation of Perpendicularly Crossing Tunnels Advances in Civil Engineering |
| title | Effects of High-Pretension Support System on Soft Rock Large Deformation of Perpendicularly Crossing Tunnels |
| title_full | Effects of High-Pretension Support System on Soft Rock Large Deformation of Perpendicularly Crossing Tunnels |
| title_fullStr | Effects of High-Pretension Support System on Soft Rock Large Deformation of Perpendicularly Crossing Tunnels |
| title_full_unstemmed | Effects of High-Pretension Support System on Soft Rock Large Deformation of Perpendicularly Crossing Tunnels |
| title_short | Effects of High-Pretension Support System on Soft Rock Large Deformation of Perpendicularly Crossing Tunnels |
| title_sort | effects of high pretension support system on soft rock large deformation of perpendicularly crossing tunnels |
| url | http://dx.doi.org/10.1155/2020/6669120 |
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