In the past few decades, the number of tunnels constructed next to an existing tunnel has
been gradually increasing in order to accommodate infrastructure needs in congested urban …

Tunnelling in the dense urban areas frequently results in over-crossing or bypassing the
existing tunnels. It is obvious that the over-crossing tunnelling will adversely affect and even …

The tunnels between the Chenglinlu station and Jintanglu stations of Tianjin Metro line 5 are
by far the longest overlapping tunnels in China. The tunnels were constructed with earth …

A case study of a significant surface settlement induced by tunneling in permeable strata
with the shallow tunneling method is presented in this paper. The measurements of surface …

During the construction of twin mechanized tunnels, a large impact of lagging distance is
expected due to the strong effects of external loads and also the time dependence of the …

For a deep-buried tunnel in soft ground, the contact condition between the surrounding rock
and lining significantly affects the mechanical response. This is because the slip bond …

The complexity of the two-component grout behavior significantly affects the interaction
between the support system and the tunnel. The loading of the filling material (and also of …

Induced transverse ground surface settlement during the excavation of shallow piggyback
twin tunnels is examined in this study. A series of three-dimensional parametric finite …

Twin stacked tunnels become more and more common due to the limited surface area and
underground space. Most researchers have already paid attention separately to the …

The mechanized excavation of tunnels generally requires the injection of a grout material
between the segmental lining and the ground. This material has an important role for the …