The 397th ring
segment of the right line of the Wangjing tunnel of the BeijingShenyang
highspeed railway was penetrated by piling. To
guarantee the normal construction and operation of the tunnel, the tunnel
clearance, structural safety, and waterproof, especially the safety of 110 kV
high piezoelectric iron tower adjacent to the surface, a comprehensive comparison
among three repairing schemes is conducted for the shield tunnel. A series of
repairing techniques such as temporary steel frame support and welded segment
to tighten the channel steel, isolation pile construction on ground, fullsection highpressure jet grouting pile and
surface tracking compensation grouting, and auxiliary vertical shaft excavation
to completely repair the concrete structure and waterproof of damaged segments
have been employed, which successfully repaired the damaged segments adjacent
to high piezoelectric iron tower with various difficulties such as narrow
space, large formation water inflow, strict settlement and deformation
requirements, high safety risk and difficult construction.
HUA Nan, ZHAI Zhiguo, LIU Liu
. Construction Technology for Repairing Damaged Segment
of Shield Tunnel Adjacent to HighVoltage Power Tower[J]. Tunnel Construction, 2022
, 42(S1)
: 466
-479
.
DOI: 10.3973/j.issn.2096-4498.2022.S1.055
