Feasibility Study on Immersed-Tube Tunnels in Ultra-Deep (Over 100 m) Water Areas

NING Jinjin; LYU Yingxue

doi:10.3973/j.issn.2096-4498.2024.S2.037

Tunnel Construction >

2024 , Vol. 44 >Issue S2: 377 - 382

DOI: https://doi.org/10.3973/j.issn.2096-4498.2024.S2.037

Feasibility Study on Immersed-Tube Tunnels in Ultra-Deep (Over 100 m) Water Areas

NING Jinjin ,
LYU Yingxue

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(1. Tongji University, Shanghai 200092, China; 2. CCCC Tianjin Port Engineering Design & Consulting Co., Ltd., Tianjin 300461, China; 3. Key Laboratory of Coastal Engineering Hydrodynamics, CCCC, Tianjin 300222, China; 4. Tianjin Port Engineering Institute Co., Ltd. of CCCC First Harbor Engineering Co., Ltd., Tianjin 300222, China)

Online published: 2024-12-20

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Abstract

The authors discuss the feasibility of immersed-tube tunnels in ultra-deep (over 100 m) water areas such as Taiwan Strait, and make a investigation on global immersed-tube tunnels such as the Hong Kong-Zhuhai-Macao bridge and the Shenzhen-Zhongshan link. Based on three major technical challenges of immersed tube tunnels, i.e., element joint, foundation, element floating and installation, the adaptability of element structure, joint sealing system, foundation, and floating and installation ship machinery equipment are discussed from the perspectives of scheme design and construction technology. The results demonstrate that the immersed-tube tunnels are feasible for crossing Taiwan Strait by redesigning GINA waterstops, developing novel equipment, measurement and control systems, and sinking systems.

Key words： Taiwan Strait channel; ultra-deep immersed-tube tunnel; joint waterproofing; foundation treatment; element sinking and installation

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NING Jinjin , LYU Yingxue .

Feasibility Study on Immersed-Tube Tunnels in Ultra-Deep (Over 100 m) Water Areas

[J]. Tunnel Construction, 2024 , 44(S2) : 377 -382 . DOI: 10.3973/j.issn.2096-4498.2024.S2.037

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