Seepage induced by the difference of hydraulic head between the ground and the shield's
chamber will adversely affect the stability of tunnel face when tunnels are excavated through …

Numerous subway tunnels have been built in soft upper and hard lower composite strata.
However, the stability and bearing capacity of composite strata are difficult to predict …

Seepage plays a significant role affecting the tunnel face failure process. However, its effect
on the stability of the underwater tunnel face remains unclear. To study the seepage effect …

Based on the three-dimensional hydraulic head distribution model and the upper bound
theorem of the limit analysis, a new model was established to calculate the limit support …

The stability of the tunnel face has been an important issue investigated by many scholars.
To fully study the failure evolution of tunnel face and the hydro-mechanical behavior of …

The mechanical response of conditioned soil in an earth chamber is crucial for maintaining
the face stability of earth pressure balance (EPB) box jacking. This study presents the project …

The stability of excavation face in shield tunneling plays a key role for construction safety.
The ignorance of soil anisotropy in most previous studies would induce inaccurate stability …

Earth pressure balance (EPB) shield machine frequently drives along a route with a
longitudinal inclination angle (δ) during tunnel construction. The tunnel face stability is a …

A discrete element numerical simulation is used to evaluate the face stability of a shallow
shield cross-river tunnel through silty fine sand. The micro mechanism of silty fine sand is …

This paper focuses on theoretical analytical models to calculate the limit support pressure
and vertical earth pressure on the cutting face for tunnels. The failure zone is divided into …