Analysis of Excavation Parameters on Face Stability in Small Curvature Shield Tunnels

Yaliang Niu, Tielun Ren, Qiang Zhou, Xueyang Jiao, Jiuqiang Shi, Ke Xiang, Jin Tao, Qian Zhai, Alfrendo Satyanaga

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


This study investigates the face stability of small curvature shield tunnels during excavation and its relationship with various excavation parameters. The stability of the excavation face is critical to the safety and efficiency of underground construction projects. Despite the increase in the use of small curvature shield tunnels in urban areas, research works on this type of tunnel are limited and the existing literature focuses only on straight shield tunnels. This study addresses this research gap through numerical simulations, analyzing the effects of different excavation parameters such as jacking force, cutting speed, and soil conditioning on face stability. The results of the study show that the excavation parameters significantly affect face stability. The findings can be used to optimize the performance of small curvature shield tunnels and support their continued development in urban areas.

Original languageEnglish
Article number6797
JournalSustainability (Switzerland)
Issue number8
Publication statusPublished - Apr 2023


  • face stability
  • ground settlement
  • numerical modeling
  • small curvature tunnels

ASJC Scopus subject areas

  • Computer Science (miscellaneous)
  • Geography, Planning and Development
  • Renewable Energy, Sustainability and the Environment
  • Environmental Science (miscellaneous)
  • Energy Engineering and Power Technology
  • Hardware and Architecture
  • Computer Networks and Communications
  • Management, Monitoring, Policy and Law


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