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http://dx.doi.org/10.9711/KTAJ.2022.24.1.015

Risk analysis and countermeasures for subsea tunnel planning of national road 77 construction work between Abhae and Hwawon  

Kim, Young-Joon (Geotechnical Engineering Dept., TESO ENGINEERING Co., Ltd.)
Kim, Zu-Cheol (Civil Design Dept., LOTTE Engineering & Construction)
Lee, Jae-Sung (Civil Design Dept., LOTTE Engineering & Construction)
Publication Information
Journal of Korean Tunnelling and Underground Space Association / v.24, no.1, 2022 , pp. 15-38 More about this Journal
Abstract
Recently, tunnel technology in Korea has shown various achievements such as long tunnel and large section by tunnel construction using TBM in Korea and abroad. Especially subsea tunnels are frequently designed and constructed. The Ga-deok subsea tunnel was completed in December 2010, and the Incheon North Port Tunnel was opened and operated in 2017, and the Bo-ryeong subsea tunnel between Dae-cheon Port and Won-san Island will be completed in 2021. In foreign countries, many subsea tunnels have been constructed and operated in such as Norway and Japan. The main technical problem in the construction of subsea tunnel is to secure stability due to high water pressure conditions and large-scale seawater inflow in fault zones and weak zones. In this paper, various risk factors and solutions are described in the subsea tunnel planning of national road 77 construction work between Abhae and Hwawon.
Keywords
Subsea tunnel; Various risk factors; High water pressure conditions; Seawater inflow;
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