Construction
techniques such as the intelligent molding of arch wall lining, integrated
pouring of bottom lining, and synchronous onetime
pouring of ditch cable trough are used to improve the structural entity quality
of railway tunnels′ arch wall lining, bottom lining,
and ditch cable trough lining and solve the defect problem of tunnel integral
lining quality. Quality defects such as lining cavities, cracks, compactness,
water leakage, water stop deviation, construction joint crushing, cracking, and
chipping can be effectively avoided with the help of concrete automatic spray
maintenance construction technology. Based on the research and development of
complete sets of equipment, a series of construction techniques such as
innovative construction joint quality control, arch pouring plumpness control,
arch wall lining cavity prevention, inverted arch and side formwork
integration, ditch cable trough mechanization, and spray curing are used, which
improves construction technology and standards of railway tunnel lining
concrete pouring, vibration, maintenance, etc., realizing controllable lining
quality based on information technology and automatic monitoring technology.
The results show that construction techniques and equipment innovations can
achieve automatic, informatized, and intelligentized lining construction to a
certain extent, greatly improve the technical level of lining construction,
reduce labor intensity and lining quality defects, and improve lining
construction quality while ensuring operator safety.
LIN Chungang
.
Innovative Key Technologies and Complete Sets of
Equipment for Informatized Construction
of Railway Tunnel Lining for Quality Improvement
[J]. Tunnel Construction, 2022
, 42(4)
: 554
-569
.
DOI: 10.3973/j.issn.2096-4498.2022.04.004
