The SichuanTibet railway tunnels bored by
tunnel boring machines (TBMs) are long and deep, some complex and severe
geological conditions may be encountered, such as hard rock burst, soft rock
large deformation, fault fracture zone, karst, harmful gas, high temperature
damage, as well as the construction problems including high altitude hypoxia,
and longdistance reverse slope with water inrush. To
ensure the safe and efficient construction of TBM, it is essential to carry out
TBM adaptive design for SichuanTibet railway tunnels
under complex and severe conditions. The difficulties and construction risks of
TBM tunnels of SichuanTibet railway are summarized,
and based on the previous typical engineering experience, the adaptive design
scheme is put forward from the aspects of TBM equipment configuration,
structural optimization, and construction measures, which can provide reference
for equipment configuration and construction process optimization, and improve
the capacity of construction risk response. Meanwhile, based on intelligent and
information technology, the intelligent early warning system of complex
geological risk, construction collaborative management platform, and online monitoring and diagnosis system of equipment status are
integrated on TBM, realizing TBM intelligent auxiliary construction and risk
prevention and control.
LONG Bin, LIU Zhihua, XIAO Jing
.
Adaptive Design of Tunnel Boring Machine Used in SichuanTibet
Railway Tunnel
under Complex and Severe Conditions
[J]. Tunnel Construction, 2021
, 41(S2)
: 626
-633
.
DOI: 10.3973/j.issn.2096-4498.2021.S2.080
