Inversion and Analysis of the Initial Ground Stress Field of the Deep-Buried Tunnel Area
The detailed analysis of the initial ground stress distribution law is an important work for the safety of tunnel construction and operation. Especially, the high ground stress phenomenon in the deep-buried tunnel area is common, which has a great impact on the tunnel construction. Based on the on-s...
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| Format: | Article |
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MDPI AG
2022-09-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/12/18/8986 |
| _version_ | 1797491569095344128 |
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| author | Rongsen Yu Zhongsheng Tan Junpeng Gao Xiuying Wang Jinpeng Zhao |
| author_facet | Rongsen Yu Zhongsheng Tan Junpeng Gao Xiuying Wang Jinpeng Zhao |
| author_sort | Rongsen Yu |
| collection | DOAJ |
| description | The detailed analysis of the initial ground stress distribution law is an important work for the safety of tunnel construction and operation. Especially, the high ground stress phenomenon in the deep-buried tunnel area is common, which has a great impact on the tunnel construction. Based on the on-site measured ground stress data, the analysis of the initial ground stress field by numerical simulation and multiple linear regression is mainly described in this study. Following the comparison and selection of three coefficient estimation methods for the regression equation, the best regression method is selected for inversion and verification. The distribution characteristic of the initial ground stress at different buried depths of the tunnel line is obtained. The inversion results of the initial ground stress in a tunnel area, in China, show that the lateral pressure coefficient gradually decreases with the buried depth increasing, while the overall lateral pressure coefficient is in the range of 1.0–2.0, showing a more significant horizontal tectonic. At the area where the tunnel passes through the fault, a small amount of horizontal tectonic stress is released. The ratio of horizontal principal stress to vertical principal stress is smaller than that on both sides, which is different from the distribution characteristic of lateral pressure coefficient without the impact of fault. It shows that faults have a great influence on ground stress. The lateral pressure coefficient in the area near the fault must be determined according to the on-site measured results. |
| first_indexed | 2024-03-10T00:51:11Z |
| format | Article |
| id | doaj.art-a2b23ea4f4214ebca74c51b43fcf49f2 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T00:51:11Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-a2b23ea4f4214ebca74c51b43fcf49f22023-11-23T14:51:16ZengMDPI AGApplied Sciences2076-34172022-09-011218898610.3390/app12188986Inversion and Analysis of the Initial Ground Stress Field of the Deep-Buried Tunnel AreaRongsen Yu0Zhongsheng Tan1Junpeng Gao2Xiuying Wang3Jinpeng Zhao4Key Laboratory of Urban Underground Engineering of Ministry of Education, Beijing Jiaotong University, Beijing 100044, ChinaKey Laboratory of Urban Underground Engineering of Ministry of Education, Beijing Jiaotong University, Beijing 100044, ChinaKey Laboratory of Urban Underground Engineering of Ministry of Education, Beijing Jiaotong University, Beijing 100044, ChinaKey Laboratory of Urban Underground Engineering of Ministry of Education, Beijing Jiaotong University, Beijing 100044, ChinaKey Laboratory of Urban Underground Engineering of Ministry of Education, Beijing Jiaotong University, Beijing 100044, ChinaThe detailed analysis of the initial ground stress distribution law is an important work for the safety of tunnel construction and operation. Especially, the high ground stress phenomenon in the deep-buried tunnel area is common, which has a great impact on the tunnel construction. Based on the on-site measured ground stress data, the analysis of the initial ground stress field by numerical simulation and multiple linear regression is mainly described in this study. Following the comparison and selection of three coefficient estimation methods for the regression equation, the best regression method is selected for inversion and verification. The distribution characteristic of the initial ground stress at different buried depths of the tunnel line is obtained. The inversion results of the initial ground stress in a tunnel area, in China, show that the lateral pressure coefficient gradually decreases with the buried depth increasing, while the overall lateral pressure coefficient is in the range of 1.0–2.0, showing a more significant horizontal tectonic. At the area where the tunnel passes through the fault, a small amount of horizontal tectonic stress is released. The ratio of horizontal principal stress to vertical principal stress is smaller than that on both sides, which is different from the distribution characteristic of lateral pressure coefficient without the impact of fault. It shows that faults have a great influence on ground stress. The lateral pressure coefficient in the area near the fault must be determined according to the on-site measured results.https://www.mdpi.com/2076-3417/12/18/8986initial ground stress inversionnumerical simulationmultiple linear regressiondeep-buried tunnellateral pressure coefficient |
| spellingShingle | Rongsen Yu Zhongsheng Tan Junpeng Gao Xiuying Wang Jinpeng Zhao Inversion and Analysis of the Initial Ground Stress Field of the Deep-Buried Tunnel Area Applied Sciences initial ground stress inversion numerical simulation multiple linear regression deep-buried tunnel lateral pressure coefficient |
| title | Inversion and Analysis of the Initial Ground Stress Field of the Deep-Buried Tunnel Area |
| title_full | Inversion and Analysis of the Initial Ground Stress Field of the Deep-Buried Tunnel Area |
| title_fullStr | Inversion and Analysis of the Initial Ground Stress Field of the Deep-Buried Tunnel Area |
| title_full_unstemmed | Inversion and Analysis of the Initial Ground Stress Field of the Deep-Buried Tunnel Area |
| title_short | Inversion and Analysis of the Initial Ground Stress Field of the Deep-Buried Tunnel Area |
| title_sort | inversion and analysis of the initial ground stress field of the deep buried tunnel area |
| topic | initial ground stress inversion numerical simulation multiple linear regression deep-buried tunnel lateral pressure coefficient |
| url | https://www.mdpi.com/2076-3417/12/18/8986 |
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