Mechanized matching construction and enclosed rock stability monitoring technology of subsea tunnel

Guo Yongjian; Dai Zhenyang

doi:10.20265/j.cnki.issn.1007-2993.2023-0941

Volume 39 Issue 2

Apr. 2025

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Guo Yongjian, Dai Zhenyang. Mechanized matching construction and enclosed rock stability monitoring technology of subsea tunnel[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2025, 39(2): 200-206. doi: 10.20265/j.cnki.issn.1007-2993.2023-0941

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Guo Yongjian, Dai Zhenyang. Mechanized matching construction and enclosed rock stability monitoring technology of subsea tunnel[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2025, 39(2): 200-206. doi: 10.20265/j.cnki.issn.1007-2993.2023-0941

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Mechanized matching construction and enclosed rock stability monitoring technology of subsea tunnel

doi: 10.20265/j.cnki.issn.1007-2993.2023-0941

Qingdao Conson Second Jiaozhou Bay Subsea Tunnel Co., Ltd., Qingdao 266031, Shandong, China

Received Date: 2023-12-27
Accepted Date: 2024-10-29
Rev Recd Date: 2024-08-10

Available Online: 2025-04-07

Publish Date: 2025-04-08

Abstract

Abstract

To improve the construction efficiency and safety of the ultra-long subsea tunnel, there has been a gradual shift from traditional tunneling methods towards adopting large-scale mechanized integrated construction techniques. To promote the application of mechanized supporting construction methods, relying on the two-way six-lane mainline tunnel of the Jiaozhou Bay second subsea tunnel, a comprehensive analysis of the mechanized supporting construction test section of the ultra-long subsea tunnel was conducted from the aspects of equipment selection, reasonable construction space planning, and tunnel safety evaluation. The full-section construction was adopted in the north tunnel Ⅲ-level surrounding rock, and the bench method was adopted in the Ⅲ-level surrounding rock in the south tunnel and all Ⅳ-level safety surrounding rock. The field monitoring measurement results show that the primary support deformation with the mechanized construction is less than 16 mm, and the surrounding rock and the primary support structure are stable. It is suggested to promote the application on the whole project.
- subsea tunnel,
- mechanized integrated construction,
- monitoring measurement,
- full-section construction,
- bench method construction

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References(18)

References

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Mechanized matching construction and enclosed rock stability monitoring technology of subsea tunnel

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