The tunnel lining might has many problems such as
hollow behind lining, insufficient compactness, construction joint collapse and
fallblock, and waterstop tie deviation, etc. As a result, an intelligent
tunnel lining trolley with automatic distribution and pressure casting is
developed. A new technical system including automatic concrete distribution,
casting with pressure, construction joint zero overlapping and cavity
monitoring, etc. is established, which can avoid or reduce lining quality
defects. The test results show that: (1) By adopting automatic concrete
distribution system with closed pipeline and pressure casting, layerbylayer and chamberbychamber casting can be realized, the
concrete segregation and pollution can be reduced, the onetime pipe replacing within 2~3 min can be realized, the construction
efficiency can be improved by more than 35%, and the labor consumption can be
reduced by more than 50%. (2) By adopting automatic vibrator in the arch, the
uncompactness of concrete can be reduced by more than 85%. (3) With the help of
doublemode control system, the positioning accuracy
and safety can be improved, and the positioning time is shortened by more than
30 min compared with the conventional trolley. (4) The crack and collapse of
construction joint can be avoided by adopting Vshaped
groove zero lap device, and the construction becomes more convenient with
visual bulkhead. (5) The application of intelligent integrated control system
helps to realize automatic distribution, automatic vibration, automatic
monitoring and automatic generation of data reports, and thus achieves humancomputer interaction.
LI Ligong
,
JIANG Dongpeng
,
LIN Chungang
,
YANG Junhua
. Development and Application of Intelligent Tunnel
Lining Trolley with Automatic Concrete Distribution and
Pressure Casting[J]. Tunnel Construction, 2020
, 40(8)
: 1211
-1220
.
DOI: 10.3973/j.issn.2096-4498.2020.08.015
