FBG-Based Monitoring of Geohazards: Current Status and Trends
In recent years, natural and anthropogenic geohazards have occured frequently all over the world, and field monitoring is becoming an increasingly important task to mitigate these risks. However, conventional geotechnical instrumentations for monitoring geohazards have a number of weaknesses, such a...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2017-02-01
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| Series: | Sensors |
| Subjects: | |
| Online Access: | http://www.mdpi.com/1424-8220/17/3/452 |
| _version_ | 1811305628102033408 |
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| author | Hong-Hu Zhu Bin Shi Cheng-Cheng Zhang |
| author_facet | Hong-Hu Zhu Bin Shi Cheng-Cheng Zhang |
| author_sort | Hong-Hu Zhu |
| collection | DOAJ |
| description | In recent years, natural and anthropogenic geohazards have occured frequently all over the world, and field monitoring is becoming an increasingly important task to mitigate these risks. However, conventional geotechnical instrumentations for monitoring geohazards have a number of weaknesses, such as low accuracy, poor durability, and high sensitivity to environmental interferences. In this aspect, fiber Bragg grating (FBG), as a popular fiber optic sensing technology, has gained an explosive amount of attention. Based on this technology, quasi-distributed sensing systems have been established to perform real-time monitoring and early warning of landslides, debris flows, land subsidence, earth fissures and so on. In this paper, the recent research and development activities of applying FBG systems to monitor different types of geohazards, especially those triggered by human activities, are critically reviewed. The working principles of newly developed FBG sensors are briefly introduced, and their features are summarized. This is followed by a discussion of recent case studies and lessons learned, and some critical problems associated with field implementation of FBG-based monitoring systems. Finally the challenges and future trends in this research area are presented. |
| first_indexed | 2024-04-13T08:29:47Z |
| format | Article |
| id | doaj.art-1d0410cb413b4dc0a62ee0bfca3c031c |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-13T08:29:47Z |
| publishDate | 2017-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-1d0410cb413b4dc0a62ee0bfca3c031c2022-12-22T02:54:18ZengMDPI AGSensors1424-82202017-02-0117345210.3390/s17030452s17030452FBG-Based Monitoring of Geohazards: Current Status and TrendsHong-Hu Zhu0Bin Shi1Cheng-Cheng Zhang2School of Earth Sciences and Engineering, Nanjing University, Nanjing 210023, ChinaSchool of Earth Sciences and Engineering, Nanjing University, Nanjing 210023, ChinaSchool of Earth Sciences and Engineering, Nanjing University, Nanjing 210023, ChinaIn recent years, natural and anthropogenic geohazards have occured frequently all over the world, and field monitoring is becoming an increasingly important task to mitigate these risks. However, conventional geotechnical instrumentations for monitoring geohazards have a number of weaknesses, such as low accuracy, poor durability, and high sensitivity to environmental interferences. In this aspect, fiber Bragg grating (FBG), as a popular fiber optic sensing technology, has gained an explosive amount of attention. Based on this technology, quasi-distributed sensing systems have been established to perform real-time monitoring and early warning of landslides, debris flows, land subsidence, earth fissures and so on. In this paper, the recent research and development activities of applying FBG systems to monitor different types of geohazards, especially those triggered by human activities, are critically reviewed. The working principles of newly developed FBG sensors are briefly introduced, and their features are summarized. This is followed by a discussion of recent case studies and lessons learned, and some critical problems associated with field implementation of FBG-based monitoring systems. Finally the challenges and future trends in this research area are presented.http://www.mdpi.com/1424-8220/17/3/452fiber optic sensorfiber Bragg grating (FBG)geological processgeohazardfield monitoringgeotechnical instrumentation |
| spellingShingle | Hong-Hu Zhu Bin Shi Cheng-Cheng Zhang FBG-Based Monitoring of Geohazards: Current Status and Trends Sensors fiber optic sensor fiber Bragg grating (FBG) geological process geohazard field monitoring geotechnical instrumentation |
| title | FBG-Based Monitoring of Geohazards: Current Status and Trends |
| title_full | FBG-Based Monitoring of Geohazards: Current Status and Trends |
| title_fullStr | FBG-Based Monitoring of Geohazards: Current Status and Trends |
| title_full_unstemmed | FBG-Based Monitoring of Geohazards: Current Status and Trends |
| title_short | FBG-Based Monitoring of Geohazards: Current Status and Trends |
| title_sort | fbg based monitoring of geohazards current status and trends |
| topic | fiber optic sensor fiber Bragg grating (FBG) geological process geohazard field monitoring geotechnical instrumentation |
| url | http://www.mdpi.com/1424-8220/17/3/452 |
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