Circumferential yielding lining is able to tolerate controlled displacements without failure,
which has been proven to be an effective solution to large deformation problem in …

There are many challenges in the construction of large-diameter tunnels, such as low
efficiency of manual construction and poor safety. To solve the problems, a multi-functional …

Shallow tunnel can be directly affected by the terrain, and the traditional steel frame is prone
to distorting and buckling failure when the tunnel is constructed in a loess region, as it is …

Tunnel construction, especially those excavated by roadheader, will produce great dust
pollution, which always result in serious health risks to workers. In order to reveal the health …

The stress path during underground excavation is critical to the mechanical response of rock
masses, and the excavation effects in front of a tunnel face cannot be ignored. In this study, a …

Multi-layer composite support structure is widely applied in tunnel excavation but shows
complicated failure behavior under rock pressure. Local joint broken, out-of-plane instability …

As more and more TBM tunnels are constructed under complex conditions such as high
stress and fault fracture zones, large deformation disasters of squeezing soft surrounding …

Due to the extremely complex load distribution form and evolution law of soft-rock tunnels
under high geo-stress, there has been a long-term lack of theoretical support for designing …

There is a development trend from qualitative towards quantitative analysis for tunnel
stability. The widely accepted convergence-confinement method (CCM) provides a …

The application of the compressible layer in linings provides a feasible and safe solution to
addressing the problems of the excessive deformations of surrounding rocks and support …