Monitoring soil cracking using OFDR-based distributed temperature sensing framework
Soil cracking induced by extreme drought represents a widespread natural phenomenon occurring across the earth surface, capable of triggering multiple weakening mechanisms within surface soils, potentially leading to the instability and failure of slopes and agricultural infrastructures. This study...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-12-01
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| Series: | Geoderma |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0016706124003197 |
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| author | Jin-Jian Xu Chao-Sheng Tang Yaowen Yang Zhao-Jun Zeng Lin Li Qing Cheng Xi-Ying Zhang Bin Shi |
| author_facet | Jin-Jian Xu Chao-Sheng Tang Yaowen Yang Zhao-Jun Zeng Lin Li Qing Cheng Xi-Ying Zhang Bin Shi |
| author_sort | Jin-Jian Xu |
| collection | DOAJ |
| description | Soil cracking induced by extreme drought represents a widespread natural phenomenon occurring across the earth surface, capable of triggering multiple weakening mechanisms within surface soils, potentially leading to the instability and failure of slopes and agricultural infrastructures. This study proposes an innovative geophysical monitoring framework for detecting field soil cracking by combining the actively heated fiber-optic (AHFO) method and distributed fibre optical sensing (DFOS) based on optical frequency domain reflectometry (OFDR) technique, referred to as AH-OFDR framework. Laboratory calibration tests, field monitoring tests, numerical simulations, and sensitivity analyses were employed to comprehensively evaluate the feasibility, effectiveness, and limitations of the AH-OFDR framework for soil crack monitoring. Laboratory calibration confirmed that the DFOS-OFDR technique achieves a minimum spatial resolution and readout accuracy of 1 mm, along with a temperature measurement accuracy of ±0.1 °C. Field monitoring verified that the AH-OFDR framework can accurately detect soil cracks ranging in width from 0.01 m to 0.12 m. Additionally, numerical simulations not only validated the effectiveness of the AH-OFDR framework across a broader range of crack widths, from 0.01 m to 0.50 m, but also established a quantitative relationship between temperature changes and the spatial distribution of crack positions and widths. Notably, a critical crack width threshold of 0.30 m was identified within the AH-OFDR framework, significantly impacting the prediction of soil crack widths. Sensitivity analysis demonstrated the remarkable crack detection capabilities of the AH-OFDR framework, irrespective of the soil crack width and spacing. The AH-OFDR framework holds substantial potential as an innovative and high-resolution observational method for advancing our understanding of diverse geological and hydrogeological processes. |
| format | Article |
| id | doaj-art-da78375e414144819c8123e49791e626 |
| institution | OA Journals |
| issn | 1872-6259 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Geoderma |
| spelling | doaj-art-da78375e414144819c8123e49791e6262025-08-20T02:31:27ZengElsevierGeoderma1872-62592024-12-0145211709010.1016/j.geoderma.2024.117090Monitoring soil cracking using OFDR-based distributed temperature sensing frameworkJin-Jian Xu0Chao-Sheng Tang1Yaowen Yang2Zhao-Jun Zeng3Lin Li4Qing Cheng5Xi-Ying Zhang6Bin Shi7School of Earth Sciences and Engineering, Nanjing University, 163 Xianlin Road, Nanjing 210023, ChinaSchool of Earth Sciences and Engineering, Nanjing University, 163 Xianlin Road, Nanjing 210023, China; Key Laboratory of Earth Fissures Geological Disaster, Ministry of Natural Resources (Geological Survey of Jiangsu Province), Nanjing 210018, China; Corresponding author at: School of Earth Sciences and Engineering, Nanjing University, 163 Xianlin Road, Nanjing 210023, China.School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, SingaporeSchool of Earth Sciences and Engineering, Nanjing University, 163 Xianlin Road, Nanjing 210023, ChinaSchool of Earth Sciences and Engineering, Nanjing University, 163 Xianlin Road, Nanjing 210023, ChinaSchool of Earth Sciences and Engineering, Nanjing University, 163 Xianlin Road, Nanjing 210023, ChinaQinghai Provincial Key Laboratory of Geology and Environment of Salt Lake, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining 810008, ChinaSchool of Earth Sciences and Engineering, Nanjing University, 163 Xianlin Road, Nanjing 210023, ChinaSoil cracking induced by extreme drought represents a widespread natural phenomenon occurring across the earth surface, capable of triggering multiple weakening mechanisms within surface soils, potentially leading to the instability and failure of slopes and agricultural infrastructures. This study proposes an innovative geophysical monitoring framework for detecting field soil cracking by combining the actively heated fiber-optic (AHFO) method and distributed fibre optical sensing (DFOS) based on optical frequency domain reflectometry (OFDR) technique, referred to as AH-OFDR framework. Laboratory calibration tests, field monitoring tests, numerical simulations, and sensitivity analyses were employed to comprehensively evaluate the feasibility, effectiveness, and limitations of the AH-OFDR framework for soil crack monitoring. Laboratory calibration confirmed that the DFOS-OFDR technique achieves a minimum spatial resolution and readout accuracy of 1 mm, along with a temperature measurement accuracy of ±0.1 °C. Field monitoring verified that the AH-OFDR framework can accurately detect soil cracks ranging in width from 0.01 m to 0.12 m. Additionally, numerical simulations not only validated the effectiveness of the AH-OFDR framework across a broader range of crack widths, from 0.01 m to 0.50 m, but also established a quantitative relationship between temperature changes and the spatial distribution of crack positions and widths. Notably, a critical crack width threshold of 0.30 m was identified within the AH-OFDR framework, significantly impacting the prediction of soil crack widths. Sensitivity analysis demonstrated the remarkable crack detection capabilities of the AH-OFDR framework, irrespective of the soil crack width and spacing. The AH-OFDR framework holds substantial potential as an innovative and high-resolution observational method for advancing our understanding of diverse geological and hydrogeological processes.http://www.sciencedirect.com/science/article/pii/S0016706124003197Soil crackingOptical frequency domain reflectometry (OFDR)Actively heated fiber-optic (AHFO)Distributed temperature sensingCrack width prediction |
| spellingShingle | Jin-Jian Xu Chao-Sheng Tang Yaowen Yang Zhao-Jun Zeng Lin Li Qing Cheng Xi-Ying Zhang Bin Shi Monitoring soil cracking using OFDR-based distributed temperature sensing framework Geoderma Soil cracking Optical frequency domain reflectometry (OFDR) Actively heated fiber-optic (AHFO) Distributed temperature sensing Crack width prediction |
| title | Monitoring soil cracking using OFDR-based distributed temperature sensing framework |
| title_full | Monitoring soil cracking using OFDR-based distributed temperature sensing framework |
| title_fullStr | Monitoring soil cracking using OFDR-based distributed temperature sensing framework |
| title_full_unstemmed | Monitoring soil cracking using OFDR-based distributed temperature sensing framework |
| title_short | Monitoring soil cracking using OFDR-based distributed temperature sensing framework |
| title_sort | monitoring soil cracking using ofdr based distributed temperature sensing framework |
| topic | Soil cracking Optical frequency domain reflectometry (OFDR) Actively heated fiber-optic (AHFO) Distributed temperature sensing Crack width prediction |
| url | http://www.sciencedirect.com/science/article/pii/S0016706124003197 |
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