ISSN 2096-4498

   CN 44-1745/U

二维码
  • Home
  • Solicit Contributions
  • Writing Requirements
  • Editorial Board
  • Council Members
  • Publication Ethics
  • Open Access
  • Advertising
  • Contact Us
  • 中文

Tunnel Construction >

2024 , Vol. 44 >Issue S1: 408 - 417

DOI: https://doi.org/10.3973/j.issn.2096-4498.2024.S1.044

Comparative Study on Construction Schemes for Connecting Channel of Underwater Super-Large Diameter Shield Tunnel: A Case Study on Haizhuwan Tunnel in Guangzhou, China

Expand

  • (1. China Railway 14th Bureau Group Large Shield Engineering Co., Ltd., Nanjing 210000, Jiangsu, China; 2. College of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518060, Guangdong, China; 3. State Key Laboratory of Intelligent Geotechnics and Tunnelling (Shenzhen University), Shenzhen 518060, Guangdong, China)

Online published: 2024-09-02

Fold

Abstract

In the construction process of underwater and high water pressure large-diameter shield tunnel connecting channels, the design and construction face numerous challenges due to the lack of sufficient engineering technical standards and case experience. To address these issues, case study is conducted on six connecting channels of Haizhuwan large-diameter shield tunnel in Guangzhou, China, to explore a more applicable construction scheme. First, an in-depth analysis of the engineering geological supplementary investigation data and on-site construction conditions is conducted to reveal the deficiencies in the original mining method design and construction scheme. Then, two optimized schemes, mining method combined with ground freezing reinforcement scheme and mechanical pipe jacking construction scheme, are proposed. Thereafter, a comprehensive optimal selection analysis of different construction methods is performed in terms of safety, cost-effectiveness, and construction period, and carbon emission indicators are introduced for green and low-carbon assessment. The results show that the mechanical pipe jacking method is superior in safety and construction efficiency to other schemes, significantly shortening the construction period; and the carbon emissions are reduced by 2 747.51 tCO2e compared to the mining method combined with ground freezing reinforcement scheme.

Key words： large-diameter shield; underwater connecting channel; ground freezing method; mining method; mechanical pipe jacking method; carbon emission calculation; scheme comparison

Cite this article

HUANG Shuhua, ZHENG Zhenji, SHENG Jian, XIE Dianyan, ZHANG Liang, CHEN Xiangsheng, SU Dong .

Comparative Study on Construction Schemes for Connecting Channel of Underwater Super-Large Diameter Shield Tunnel: A Case Study on Haizhuwan Tunnel in Guangzhou, China

[J]. Tunnel Construction, 2024 , 44(S1) : 408 -417 . DOI: 10.3973/j.issn.2096-4498.2024.S1.044

Options
Outlines

/

〈 〉

Support by Beijing Magtech Co.ltd support@magtech.com.cn