Due to the reinforcement of prefabricated corrugated
steel lining, the clearance area of the tunnel crosssection
reduces and varies. In order to accurately clarify the specific information of
tunnel clearance variation after reinforcement, 3D laser scanning technology is
proposed to scan the tunnel sections before and after corrugated steel lining,
meanwhile, a standardized workflow including field scanning and inner
processing is established. The results indicate that: (1) There are some
deviations between the profile of the actual tunnel and the design one,
therefore the design data could not be used directly to process the corrugated
steel. (2) The processed results of 3D laser point cloud cannot only be used to
guide the segment refinement of corrugated steel, but also obtain the accurate
variation of tunnel clearance before and after reinforcement by nested
analysis. (3) The profile of the tunnel crosssection
can still meet the limit requirement of tunnel construction after corrugated
steel lining reinforcement with the maximum value of 20.3 cm at tunnel crown.
WANG Wei, XU Xueliang, MA Weibin, AN Zheli, FU Bingxian, LI Yao
. Study on Application of 3D Laser Scanning Technology in
Tunnel Corrugated Steel Lining Reinforcement[J]. Tunnel Construction, 2020
, 40(S1)
: 423
-428
.
DOI: 10.3973/j.issn.2096-4498.2020.S1.056
