To reduce the
interaction of the two tunnel boring machines(TBMs) in the extralong
tunnels and further realize coordinated, highefficient,
and rapid construction, a case study is conducted on a bid section of the North
Xinjiang water supply phase Ⅱ project. Then the TBM
assembly tunnel structure, belt conveyor mucking, track transportation, and
tunnel drainage are analyzed. Finally, some key techniques for highefficient doubleTBM construction, including
structural optimization of TBM assembly tunnel, doubledirectional
multilevel belt conveyor mucking, comprehensive track transportation, and
convergent cascade drainage, are formed based on the construction idea of
independent operation and unified management. The application effect show that
the optimized structure of the assembly tunnel is reasonable, which meets the
needs of synchronous assembly of two TBMs and helps to realize the
establishment of key technical systems such as belt conveyors, track
transportation, and construction drainage. During tunneling stage, various
systems operated well, and the expected goals have been achieved steadily.
WEN Bin
.
Key Technology and Application of Efficient Tunneling
of an Extra-Long Tunnel
Bored by Two Tunnel Boring Machines
[J]. Tunnel Construction, 2022
, 42(S1)
: 433
-441
.
DOI: 10.3973/j.issn.2096-4498.2022.S1.051
