Cargando…

Method for Tunnel Displacements Calculation Based on Mobile Tunnel Monitoring System

Efficient, high-precision, and automatic measurement of tunnel structural changes is the key to ensuring the safe operation of subways. Conventional manual, static, and discrete measurements cannot meet the requirements of rapid and full-section detection in subway construction and operation. Mobile...

Descripción completa

Detalles Bibliográficos
Autores principales: Yue, Zeyu, Sun, Haili, Zhong, Ruofei, Du, Liming
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8272133/
https://www.ncbi.nlm.nih.gov/pubmed/34199103
http://dx.doi.org/10.3390/s21134407
_version_ 1783721153952481280
author Yue, Zeyu
Sun, Haili
Zhong, Ruofei
Du, Liming
author_facet Yue, Zeyu
Sun, Haili
Zhong, Ruofei
Du, Liming
author_sort Yue, Zeyu
collection PubMed
description Efficient, high-precision, and automatic measurement of tunnel structural changes is the key to ensuring the safe operation of subways. Conventional manual, static, and discrete measurements cannot meet the requirements of rapid and full-section detection in subway construction and operation. Mobile laser scanning technology is the primary method for tunnel detection. Herein, we propose a method to calculate shield tunnel displacements of a full cross-section tunnel. The point cloud data, obtained via a mobile tunnel deformation detection system, were fitted, projected, and interpolated to generate an orthophoto image. Combined with the cumulative characteristics of the tunnel gray gradient, the longitudinal ring seam of the tunnel was identified, while the Canny algorithm and Hough line detection algorithm identified the transverse seam. The symmetrical vertical foot method and cross-section superposition analysis were used to calculate the circumferential and radial displacements, respectively. The proposed displacement calculation method achieves automatic recognition of a ring seam, reduces human–computer interaction, and is fast, intelligent, and accurate. Furthermore, the description of the tunnel deformation location and deformation amount is more quantitative and specific. These results confirm the significance of shield tunnel displacement monitoring based on mobile monitoring systems in tunnel disease monitoring.
format Online
Article
Text
id pubmed-8272133
institution National Center for Biotechnology Information
language English
publishDate 2021
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-82721332021-07-11 Method for Tunnel Displacements Calculation Based on Mobile Tunnel Monitoring System Yue, Zeyu Sun, Haili Zhong, Ruofei Du, Liming Sensors (Basel) Article Efficient, high-precision, and automatic measurement of tunnel structural changes is the key to ensuring the safe operation of subways. Conventional manual, static, and discrete measurements cannot meet the requirements of rapid and full-section detection in subway construction and operation. Mobile laser scanning technology is the primary method for tunnel detection. Herein, we propose a method to calculate shield tunnel displacements of a full cross-section tunnel. The point cloud data, obtained via a mobile tunnel deformation detection system, were fitted, projected, and interpolated to generate an orthophoto image. Combined with the cumulative characteristics of the tunnel gray gradient, the longitudinal ring seam of the tunnel was identified, while the Canny algorithm and Hough line detection algorithm identified the transverse seam. The symmetrical vertical foot method and cross-section superposition analysis were used to calculate the circumferential and radial displacements, respectively. The proposed displacement calculation method achieves automatic recognition of a ring seam, reduces human–computer interaction, and is fast, intelligent, and accurate. Furthermore, the description of the tunnel deformation location and deformation amount is more quantitative and specific. These results confirm the significance of shield tunnel displacement monitoring based on mobile monitoring systems in tunnel disease monitoring. MDPI 2021-06-27 /pmc/articles/PMC8272133/ /pubmed/34199103 http://dx.doi.org/10.3390/s21134407 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Yue, Zeyu
Sun, Haili
Zhong, Ruofei
Du, Liming
Method for Tunnel Displacements Calculation Based on Mobile Tunnel Monitoring System
title Method for Tunnel Displacements Calculation Based on Mobile Tunnel Monitoring System
title_full Method for Tunnel Displacements Calculation Based on Mobile Tunnel Monitoring System
title_fullStr Method for Tunnel Displacements Calculation Based on Mobile Tunnel Monitoring System
title_full_unstemmed Method for Tunnel Displacements Calculation Based on Mobile Tunnel Monitoring System
title_short Method for Tunnel Displacements Calculation Based on Mobile Tunnel Monitoring System
title_sort method for tunnel displacements calculation based on mobile tunnel monitoring system
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8272133/
https://www.ncbi.nlm.nih.gov/pubmed/34199103
http://dx.doi.org/10.3390/s21134407
work_keys_str_mv AT yuezeyu methodfortunneldisplacementscalculationbasedonmobiletunnelmonitoringsystem
AT sunhaili methodfortunneldisplacementscalculationbasedonmobiletunnelmonitoringsystem
AT zhongruofei methodfortunneldisplacementscalculationbasedonmobiletunnelmonitoringsystem
AT duliming methodfortunneldisplacementscalculationbasedonmobiletunnelmonitoringsystem