Numerical Simulation of Mudstone Shield Tunnel Excavation with ABAQUS Seepage–Stress Coupling: A Case Study

Changchang Li, Zhengzhong Wang () and Quanhong Liu
Additional contact information
Changchang Li: College of Water Resources and Architectural Engineering, Northwest A&F University, Xianyang 712100, China
Zhengzhong Wang: College of Water Resources and Architectural Engineering, Northwest A&F University, Xianyang 712100, China
Quanhong Liu: College of Water Resources and Architectural Engineering, Northwest A&F University, Xianyang 712100, China

Sustainability, 2022, vol. 15, issue 1, 1-15

Abstract: To explore the influence of shield construction on the stress of tunnels surrounding rock and linings in deep, high groundwater and low-permeability soft rock strata, a 3D coupled hydro-mechanical model of a low permeability mudstone tunnel was established with ABAQUS, based on the effective stress principle and the Mohr–Coulomb elastoplastic constitutive model, taking the Bailuyuan Tunnel of the Hanjiang to Weihe River Valley Water Diversion Project Phase II in China as an example. The tunnel shield construction was simulated, and the spatial-temporal variation in the pore water pressure and the internal forces of the lining were studied. The results show that the central pore water pressure of the low-permeability mudstone face presents a V-shaped variation with the tunnel excavation. When the face was approximately 15 m from the representative section, the pore pressure on the linings basically varied between 192.7 and 182.5 m. The bending moment and axial force of the lining increased by 7.4% and 12.8%, respectively, with shield tunnelling. When the tunnel diameter was constant, the axial force and bending moment of the lining decreased quadratically as the lining thickness increased. The influence of shield construction decreased as the lining thickness increased. The research results provide a reference for the safe and optimal construction of the Hanjiang to Weihe River Valley Water Diversion Project.

Keywords: shield tunnel; seepage and stress coupling; soft rocks; low permeability; Hanjiang to Weihe River Valley Water Diversion Project (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/2071-1050/15/1/667/pdf (application/pdf)
https://www.mdpi.com/2071-1050/15/1/667/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jsusta:v:15:y:2022:i:1:p:667-:d:1020386

Access Statistics for this article

Sustainability is currently edited by Ms. Alexandra Wu

More articles in Sustainability from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().