Geotechnical Analysis of Shield Tunnel Construction
Summary
Shield tunnel construction involves the excavation and lining of subterranean passages using mechanised shields that support the tunnel face and reduce ground movement. Geotechnical analysis in this context encompasses site investigation, soil characterisation and modelling to predict ground response and settlement. Detailed laboratory and in situ testing establish soil parameters such as strength, stiffness and consolidation behaviour, which inform numerical simulations of shield advance and segment erection. Finite element and discrete element methods are commonly employed to capture soil–structure interaction, while empirical approaches—such as settlement trough models—provide rapid assessment of surface subsidence. Instrumentation and monitoring play a crucial role throughout construction, enabling real-time adjustment of shield thrust, earth pressure balance and support grouting to mitigate risk to surface infrastructure. Integration of three-dimensional geological data, building information modelling and geographic information systems has advanced the precision of predictive models, supporting adaptive control of tunnelling operations in complex urban environments. As urbanisation drives demand for deeper and longer tunnels, robust geotechnical analysis ensures both safety and efficiency, guiding design optimisation and risk management in projects ranging from metro lines to utility conduits.
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Geotechnical Analysis of Shield Tunnel Construction publication trend
The graph below shows the total number of articles in geotechnical analysis of shield tunnel construction across all publications each year (not limited to Nature Index journals).
Technical terms
Shield tunnelling: A mechanised excavation method using a rotating or earth-pressure balance shield to support the tunnel face.
Tunnel boring machine (TBM): A large machine that excavates and lines tunnels, controlling earth pressure at the face.
Earth pressure balance (EPB) shield: A type of TBM that maintains face stability by balancing soil pressure with excavated spoil.
Settlement trough: The characteristic profile of ground subsidence induced by tunnelling beneath the surface.
Bentonite slurry: A mix of water and bentonite clay used to support a tunnel face and form a filter cake.
Filter cake: A thin, low-permeability layer deposited on soil grains when bentonite slurry infiltrates, enhancing face support.
Finite element modelling (FEM): A numerical technique for approximating the response of soil–structure systems under load.
Soil consolidation: The time-dependent reduction in soil volume due to expulsion of pore water under sustained load.
Building information modelling (BIM): A digital representation of physical and functional characteristics of infrastructure for planning and monitoring.
References
- Development and Engineering Application of Intelligent Management and Control Platform for the Shield Tunneling Construction Close to Risk Sources. Journal of Intelligent Construction (2024).
- State-of-the-art review on pressure infiltration behavior of bentonite slurry into saturated sand for TBM tunneling. Smart Construction and Sustainable Cities (2023).
- A simplified elastic analysis of tunnel-piled structure interaction. Tunnelling and Underground Space Technology (2017).
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