A
bstract
With
the
rapid
development
of
economy
,
people
pay
more
and
more
attention
to
the
development
of
underground
space
and
the
construction
of
underground
rail
transit
.
Shield
tunneling
is
widely
used
in
the
construction
of
urban
rail
transit
because
of
its
characteristics
of
fast
construction
speed
and
being
unaffected
by
the
surrounding
environment
.
In
construction
,
it
is
comm
基于模型试验分析盾构施工对已有桩基的影响-20760字.docx