Centrifugal model tests on face failure of earth pressure balance shield induced by steady state seepage in saturated sandy silt ground
When tunnelling in a stratum with a high level of water (eg, tunnelling below the river) by
earth pressure balance shield, seepage due to the difference of hydraulic head between the …
earth pressure balance shield, seepage due to the difference of hydraulic head between the …
Centrifuge testing and numerical modeling of tunnel face stability considering longitudinal slope angle and steady state seepage in soft clay
X Weng, Y Sun, B Yan, H Niu, R Lin, S Zhou - Tunnelling and Underground …, 2020 - Elsevier
Understanding the failure mechanism of a tunnel excavation face under complex
hydrogeological conditions is a key challenge for geotechnical engineering. In this study, we …
hydrogeological conditions is a key challenge for geotechnical engineering. In this study, we …
An upper-bound analytical model of blow-out for a shallow tunnel in sand considering the partial failure within the face
This paper proposes a three-dimensional analytical model of blow-out for a shallow tunnel
in sand. Upper bound theorem is adopted to deduce the analytical solutions of limit support …
in sand. Upper bound theorem is adopted to deduce the analytical solutions of limit support …
3D large-deformation modelling on face instability and sinkhole formation during tunnelling through non-uniform soils
Natural soils exhibit spatially non-uniform properties, bringing some uncertainties on the
evaluation of tunnel stability. This study therefore investigates the face instability and in …
evaluation of tunnel stability. This study therefore investigates the face instability and in …
Physical modeling of the influence of tunnel active face instability on existing pipelines
In congested urban areas, earth pressure balance (EPB) shielding is commonly adopted to
alleviate tunneling effects on surrounding structures. Tunnel active face instability can cause …
alleviate tunneling effects on surrounding structures. Tunnel active face instability can cause …
Influence of seepage and tunnel face opening on face support pressure of EPB shield
The hydraulic head on the tunnel face is smaller than that in the far-field ground when the
earth pressure balance shield excavates in a saturated stratum. The seepage force could …
earth pressure balance shield excavates in a saturated stratum. The seepage force could …
Experimental analysis on the progressive failure mechanism of soft rock subjected to tunnel excavation
P Liao, F Wang, C Guo - Engineering Failure Analysis, 2024 - Elsevier
The failure of the soft rock can seriously threaten the construction and operation of tunnels,
which may suffer from larger deformation and instability. The knowledge of the failure …
which may suffer from larger deformation and instability. The knowledge of the failure …
Limit equilibrium models for active failures of large-diameter shield tunnel faces in soft clay reinforced with soil–cement walls
To prevent face collapses during shield tunneling, it is necessary to reinforce soft ground;
however, thus far, the stability of tunnel faces in reinforced ground has not been investigated …
however, thus far, the stability of tunnel faces in reinforced ground has not been investigated …
A physical and numerical investigation of the failure mechanism of weak rocks surrounding tunnels
The large-scale construction of railway tunnels in China is hindered by several challenges,
including large depths, large tunnel cross-sections, and fragile geological conditions. In this …
including large depths, large tunnel cross-sections, and fragile geological conditions. In this …
A study on the excavation face failure of pressurized slurry shield
Abstract The Wuhan Metro Line 8 Crossing River Tunnel Project suffered manifest pressure
fluctuations when opening the excavation chamber of the slurry shield. In this paper …
fluctuations when opening the excavation chamber of the slurry shield. In this paper …