Application of mobile 3D laser scanning technology in deformation monitoring of subway tunnels

doi:10.13474/j.cnki.11-2246.2020.0167

Abstract

Abstract: The deformation monitoring of the tunnel structure during the operation phase of the subway ensures the safety of the subway operation. At present, the monitoring of subway tunnels in China mainly uses traditional total station instruments and other equipment for manual measurement. The deformation monitoring points laid by this method are limited, and the monitoring process is slow, which is difficult to reflect completely the overall deformation characteristics of the tunnel structure. In this paper, mobile 3D laser technology is introduced into subway tunnel monitoring. The implementation of the scanning method is used to quickly obtain the complete structural information of the tunnel. The automated post-processing software is used to comprehensively monitor the deformation information of the tunnel structure. Experiments show that the method can achieve rapid, comprehensive and reliable structural monitoring results of metro tunnels under the condition of meeting the monitoring accuracy requirements.

Key words: tunnel monitoring, total station, mobile 3D laser scanner, structural deformation, subway

CLC Number:

P234

LU Peiqing, TANG Chao. Application of mobile 3D laser scanning technology in deformation monitoring of subway tunnels[J]. Bulletin of Surveying and Mapping, 2020, 0(5): 155-157,160.

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