Type Selection of SuperLargeDiameter
Slurry Shield Tunneling through&nbsp;Various
Typical Strata: a Case Study of Wuhu Yangtze River Tunnel

WANG Zhicheng, WANG Han

doi:10.3973/j.issn.2096-4498.2022.S1.058

2022 , Vol. 42 >Issue S1: 493 - 499

DOI: https://doi.org/10.3973/j.issn.2096-4498.2022.S1.058

Type Selection of SuperLargeDiameter Slurry Shield Tunneling through Various Typical Strata: a Case Study of Wuhu Yangtze River Tunnel

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(1. China Railway 14th Bureau Group Corporation Limited, Jinan 250014, Shandong, China; 2. School of Qilu Transportation, Shandong University, Jinan 250012, Shandong, China)

Online published: 2022-08-23

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Abstract

The hydrogeological conditions of Wuhu Yangtze river tunnel are complex. To improve the adaptability of cutterhead and cutters of superlargediameter slurry shield tunneling in silty fine sand, clay, and quartz sand strata under high water pressure, and further solve delayed mucking, chamber blocking, and cutterhead jam, techniques such as decreasing the disc cutter spacing, strengthening muck brushing in pressure chamber, and direct mucking are adopted in shield type selection and design stage. Compared with similar shield tunneling projects, the shield tunneling efficiency of Wuhu Yangtze river tunnel is increased by approximately 15%, greatly improving the safety of shield tunneling.

Key words： shield tunnel; superlargediameter slurry shield; fault fracture zone; rock breaking by cutterhead; slurry circulation system

Cite this article

WANG Zhicheng, WANG Han .

Type Selection of SuperLargeDiameter Slurry Shield Tunneling through Various Typical Strata: a Case Study of Wuhu Yangtze River Tunnel

[J]. Tunnel Construction, 2022 , 42(S1) : 493 -499 . DOI: 10.3973/j.issn.2096-4498.2022.S1.058

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