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Hard-rock tunnel lithology identification using multi-scale dilated convolutional attention network based on tunnel face images
For real-time classification of rock-masses in hard-rock tunnels, quick determination of the rock lithology on the tunnel face during construction is...
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Stability Analysis of 3D Tunnel Face of Shallow Rectangular Shield Tunnel
In recent years, an increasing number of rectangular excavation sections have appeared in pipe-jacking shield tunnel projects. In previous studies,...
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Development and Applicability Assessment of a Tunnel Face Monitoring System Against Tunnel Face Collapse
To avoid damage caused by rock collapse in tunnel faces, it is necessary to sound an alarm before a rock collapse occurs so that workers have time to...
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Instability Prediction Model of the Shield Tunnel Face Based on the Normal Cloud-PSM
Considering the characteristics of fuzziness and randomness of shield tunnel face instability, normal cloud theory is introduced to establish an...
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Effect of cutterhead configuration on tunnel face stability during shield machine maintenance outages
Owing to long-distance advancement or obstacles, shield tunneling machines are typically shut down for maintenance. Engineering safety during...
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Limit equilibrium models for passive failure of a large-diameter shield tunnel face in reinforced soft clay
For the excavation of a shallow tunnel in soft soil, the controllable range of the support pressure is narrow due to the small area of overburdened...
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Real-time prediction of tunnel face conditions using XGBoost Random Forest algorithm
Real-time perception of rock conditions based on continuously collected data to meet the requirements of continuous Tunnel Boring Machine (TBM)...
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Mechanism of water inrush from the tunnel face induced by fault and its application
The limit equilibrium method, slice method and elastic mechanics method are adopted to investigate the mechanism of water inrush from the tunnel face...
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Analysis and Modeling of Longitudinal Deformation Profiles Considering the Reinforcement Effect of Tunnel Face in Weak Rocks
Convergence-confinement method (CCM) has become a common method for tunnel design due to its simplicity and practicality. The ground reaction curve...
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An improved mechanism for partial blowout instability of tunnel face in large slurry shield-driven tunnels
In the tunneling driven by large diameter slurry shield (SS), the working face is at risk of passive failure when the overburden is insufficient or...
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Seismic Stability of 3D Tunnel Face considering Tensile Strength Cut-Off
Earthquakes can have a very adverse effect on tunnel excavation. The Mohr-Coulomb failure criterion is modified by introducing tensile strength...
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An Analytical Framework for Assessing the Tunnel Face in Unsaturated Soils Under Transient Infiltrations and Its Application
An accurate assessment of the tunnel face excavated under rainfalls is commonly desired in the design and construction. The infiltrating rainfall...
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Stability Analysis of 3D Deep Tunnel Face under Steady Seepage Flow Condition
The instabilities of tunnel face may occur while shields advance through the rivers or region rich in water. It is of significance to attach the...
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Experimental study of face passive failure features of a shallow shield tunnel in coastal backfill sand
Face passive failure can severely damage existing structures and underground utilities during shallow shield tunneling, especially in coastal...
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Stability of Tunnel Face Reinforced by Bolts under Seepage Flow Conditions
This paper proposed a calculation method for bolts reinforcement of tunnel face under the seepage condition. The existence of seepage in tunnel...
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Analysis of working face stability during obstruction removal from a box tunnel machine
Recently, increasing numbers of box tunnels have been built in urban areas due to their high space utilization. Rectangular boring machines are...
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Evaluation of Tunnel Face Stability Subjected to Seismic Load Based on the Non-associated Flow Rule
Reasonable determination of the stability of the tunnel face under complex conditions is necessary for safe construction. This paper focuses on the...
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A soft computing approach to tunnel face stability in a probabilistic framework
Tunnel face is important for shallow tunnels to avoid collapses. In this study, tunnel face stability is studied with soft computing techniques. A...
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Effect of Water on Tunnel Face and Surrounding Rock Deformation
To keep construction safe in water-rich stratum is one of the most challenging problems faced by tunnel designers and constructors. In this paper,...
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Consequences of building a new tunnel on in-service tunnel: a review
As the requirement for underground space is growing mainly in metropolitan cities, building a new underground tunnel in the locality of the...
