Construction applicability of mechanical methods for connecting aisle in the bohai mudstone stratum with high water pressure
China’s traditional connecting aisle construction technology is mainly to combine soil reinforcement with mining excavation. The technology is relatively mature, but it has shortcomings such as long construction period and long-term construction settlement. In order to overcome the above shortcoming...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2023-01-01
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| Series: | Frontiers in Earth Science |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/feart.2022.1085327/full |
| _version_ | 1797943072446742528 |
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| author | Wencui Zhang Yang Li Zibo Dong Zibo Dong Qiye Yang |
| author_facet | Wencui Zhang Yang Li Zibo Dong Zibo Dong Qiye Yang |
| author_sort | Wencui Zhang |
| collection | DOAJ |
| description | China’s traditional connecting aisle construction technology is mainly to combine soil reinforcement with mining excavation. The technology is relatively mature, but it has shortcomings such as long construction period and long-term construction settlement. In order to overcome the above shortcomings, mechanical methods for connecting aisle technology has become increasingly mature after years of research and development, and has been successfully applied in many areas. For the cross-sea tunnel project, this technology was first tried and applied in the interval tunnel of Qingdao Metro Line 8. It is challenging to construct the connecting aisle by mechanical method in Bohai mudstone stratum with high water pressure, which has the construction difficulties such as high excavation requirements, high requirements for post-support function and limited space of main tunnel. In this study, a cutter, propulsion system, and back supporting system were designed to handle the key and difficult points and risks of the aforementioned construction. Furthermore, targeted construction schemes were adopted for sleeve sealing, sleeve removal, and improvement of sleeve sealing. The applicability of the improved mechanical construction method to the geological conditions of the Qingdao area was verified through a numerical simulation. The research results can provide a reference for the mechanical construction of connecting aisle under similar formation conditions. |
| first_indexed | 2024-04-10T20:18:40Z |
| format | Article |
| id | doaj.art-3d13c0a62f89456b84a994c99b177ad6 |
| institution | Directory Open Access Journal |
| issn | 2296-6463 |
| language | English |
| last_indexed | 2024-04-10T20:18:40Z |
| publishDate | 2023-01-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Earth Science |
| spelling | doaj.art-3d13c0a62f89456b84a994c99b177ad62023-01-26T04:39:57ZengFrontiers Media S.A.Frontiers in Earth Science2296-64632023-01-011010.3389/feart.2022.10853271085327Construction applicability of mechanical methods for connecting aisle in the bohai mudstone stratum with high water pressureWencui Zhang0Yang Li1Zibo Dong2Zibo Dong3Qiye Yang4College of Civil Engineering and Architecture, Henan University of Technology, Zhengzhou, ChinaCollege of Civil Engineering and Architecture, Henan University of Technology, Zhengzhou, ChinaNingbo Yonggong Technology, Ningbo, ChinaCollaborative Innovation Center of Coastal Urban Rail Transit, Ningbo University, Ningbo, ChinaCollege of Civil Engineering and Architecture, Henan University of Technology, Zhengzhou, ChinaChina’s traditional connecting aisle construction technology is mainly to combine soil reinforcement with mining excavation. The technology is relatively mature, but it has shortcomings such as long construction period and long-term construction settlement. In order to overcome the above shortcomings, mechanical methods for connecting aisle technology has become increasingly mature after years of research and development, and has been successfully applied in many areas. For the cross-sea tunnel project, this technology was first tried and applied in the interval tunnel of Qingdao Metro Line 8. It is challenging to construct the connecting aisle by mechanical method in Bohai mudstone stratum with high water pressure, which has the construction difficulties such as high excavation requirements, high requirements for post-support function and limited space of main tunnel. In this study, a cutter, propulsion system, and back supporting system were designed to handle the key and difficult points and risks of the aforementioned construction. Furthermore, targeted construction schemes were adopted for sleeve sealing, sleeve removal, and improvement of sleeve sealing. The applicability of the improved mechanical construction method to the geological conditions of the Qingdao area was verified through a numerical simulation. The research results can provide a reference for the mechanical construction of connecting aisle under similar formation conditions.https://www.frontiersin.org/articles/10.3389/feart.2022.1085327/fullmechanical connecting aislehigh water pressureequipment design optimizationnumerical simulationconstruction technology |
| spellingShingle | Wencui Zhang Yang Li Zibo Dong Zibo Dong Qiye Yang Construction applicability of mechanical methods for connecting aisle in the bohai mudstone stratum with high water pressure Frontiers in Earth Science mechanical connecting aisle high water pressure equipment design optimization numerical simulation construction technology |
| title | Construction applicability of mechanical methods for connecting aisle in the bohai mudstone stratum with high water pressure |
| title_full | Construction applicability of mechanical methods for connecting aisle in the bohai mudstone stratum with high water pressure |
| title_fullStr | Construction applicability of mechanical methods for connecting aisle in the bohai mudstone stratum with high water pressure |
| title_full_unstemmed | Construction applicability of mechanical methods for connecting aisle in the bohai mudstone stratum with high water pressure |
| title_short | Construction applicability of mechanical methods for connecting aisle in the bohai mudstone stratum with high water pressure |
| title_sort | construction applicability of mechanical methods for connecting aisle in the bohai mudstone stratum with high water pressure |
| topic | mechanical connecting aisle high water pressure equipment design optimization numerical simulation construction technology |
| url | https://www.frontiersin.org/articles/10.3389/feart.2022.1085327/full |
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