Analysis of Surface Settlement Induced by Shield Tunnelling: Grey Relational Analysis and Numerical Simulation Study on Critical Construction Parameters

Minhe Luo, Ding Wang (), Xuchun Wang () and Zelin Lu
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Minhe Luo: School of Civil Engineering, Qingdao University of Technology, Qingdao 266520, China
Ding Wang: School of Mechanical and Electrical Engineering, China University of Mining and Technology, Beijing 100083, China
Xuchun Wang: School of Civil Engineering, Qingdao University of Technology, Qingdao 266520, China
Zelin Lu: School of Civil Engineering, Qingdao University of Technology, Qingdao 266520, China

Sustainability, 2023, vol. 15, issue 19, 1-21

Abstract: Excessive surface settlement poses significant challenges to shield tunnelling construction, resulting in damage to adjacent buildings, infrastructure, and underground pipelines. This study focused on investigating the surface settlement induced by shield tunnelling during the construction of Qingdao Metro Line 6 between Haigang Road Station and Chaoyang Road Station. Firstly, the settlement data from the left line of the shield tunnel were evaluated by grey relational analysis. The relational coefficients were calculated to assess the correlation degrees of each influential parameter. Subsequently, the four critical influential parameters with the highest relational degrees were chosen to investigate their effects on surface settlement through numerical simulations under different scenarios. The results show that the four parameters with the highest relational degrees were thrust, grouting pressure, earth pressure, and strata elastic modulus. It should be noted that the strata elastic modulus significantly affects surface settlement, while the grouting pressure influences the settlement trough width in weak strata. Moreover, improper thrust magnitude can lead to an increase in surface settlement. Based on these findings, recommendations are proposed for the right-line tunnel construction and practical countermeasures for surface settlement during shield tunnelling construction are provided.

Keywords: shield tunnelling; surface settlement; grey relational analysis; numerical simulation; influential parameters (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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