Optimization of Reserved Tunnel Deformation Based on
3D&nbsp;Laser Scanning Technology

ZHAO Hailin; QIU Wenge; QI Xingxin; WAN Shifu; DUAN Dongya; CHENG Yunjian

doi:10.3973/j.issn.2096-4498.2020.11.009

Tunnel Construction >

2020 , Vol. 40 >Issue 11: 1607 - 1614

DOI: https://doi.org/10.3973/j.issn.2096-4498.2020.11.009

Optimization of Reserved Tunnel Deformation Based on 3D Laser Scanning Technology

ZHAO Hailin ,
QIU Wenge ,
QI Xingxin ,
WAN Shifu ,
DUAN Dongya ,
CHENG Yunjian

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(1. Key Laboratory of Transportation Tunnel Engineering, Ministry of Education, Southwest Jiaoyong University, Chengdu 610031, Sichuan, China; 2. School of Civil Engineering and Geomatics, Southwest Petroleum University, Chengdu 610500, Sichuan, China)

Online published: 2020-12-09

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Abstract

At present, most researches of reserved deformation of tunnels rely on pointbased analysis of monitoring data. Therefore, it is difficult to obtain the overall change of the tunnel crosssection. In order to solve the limitation that traditional single point monitoring technology cannot meet the adjustment requirement of the reserved tunnel deformation, a method of optimizing the reserved deformation by using 3D laser scanning technology based on the whole crosssection analysis is proposed. The applicable results of the method to Xin′ an No. 1 Tunnel show that the maximum deformation of the test section of 7.5 cm is less than the design reserved deformation of 15 cm. An optimization method is proposed based on quality guarantee rate to set the reserved deformation in a stepped shape. It is finally determined that the reserved deformation of the crown area is 7 cm, and that of other areas is 5 cm.

Key words： tunnel engineering; 3D laser scanning technology; reserved deformation; quality guarantee rate

Cite this article

ZHAO Hailin , QIU Wenge , QI Xingxin , WAN Shifu , DUAN Dongya , CHENG Yunjian .

Optimization of Reserved Tunnel Deformation Based on 3D Laser Scanning Technology

[J]. Tunnel Construction, 2020 , 40(11) : 1607 -1614 . DOI: 10.3973/j.issn.2096-4498.2020.11.009

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