DU Ju-hong, HUANG Hong-wei. Three-dimensional numerical simulation of construction for bias closely spaced tunnels with altitude difference[J]. 2007, 28(S1).
DU Ju-hong, HUANG Hong-wei. Three-dimensional numerical simulation of construction for bias closely spaced tunnels with altitude difference[J]. 2007, 28(S1).DOI:
which is the bias closely spaced and shallow twin tunnel with altitude difference in two tunnels and constructed by using NATM
as the engineering background and applying MARC finite element software
non-linear three dimensional numerical simulation of construction process under different lagging distance between the twin tunnel excavated faces is performed. It is found that the change of the excavated face distance has a stronger influence on the horizontal displacement than on the vertical displacement of each tunnel
and especially for the left tunnel. Longer of excavated face distance is
smaller displacements at tunnel periphery and pillar is larger than the ground surface settlement in the special area