Experimental study on sinkhole collapse monitoring based on distributed Brillouin optical fiber sensor

Chen, Haijun; He, Jianping; Xue, Yuan; Zhang, Shihai

doi:10.1016/j.ijleo.2020.164825

Cited by 19 publications

(8 citation statements)

References 6 publications

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“…A non-straightforward issue is to transform the axial strain measured in the fiber into the deformation related to sinkhole activity, dominated by downward vertical displacement (subsidence). This can be performed by developing strain-displacement models as illustrated by Chen et al (2020) in laboratory experimental models.…”

Section: δVb = Cɛδɛ + Ctδtmentioning

confidence: 99%

“…The experiments that reproduce cover collapse sinkholes in the laboratory use meter-sized containers filled with soil, in which cavities are created beneath strain and temperature sensing fibers (Lanticq et al, 2009;Jiang et al, 2016;Xu et al, 2017;Chen et al, 2020). Deformation in the soil above the cavities is induced by applying a static load, adding percolating water, or pumping water.…”

Section: Previous Experiencesmentioning

confidence: 99%

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The Application of Distributed Optical Fiber Sensors (Botda) to Sinkhole Monitoring. Review and the Case of a Damaging Sinkhole in the Ebro Valley Evaporite Karst (Ne Spain)

Gutiérrez

Sevil

Sevillano

et al. 2023

Preprint

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Section: δVb = Cɛδɛ + Ctδtmentioning

confidence: 99%

Section: Previous Experiencesmentioning

confidence: 99%

The Application of Distributed Optical Fiber Sensors (Botda) to Sinkhole Monitoring. Review and the Case of a Damaging Sinkhole in the Ebro Valley Evaporite Karst (Ne Spain)

Gutiérrez

Sevil

Sevillano

et al. 2023

Preprint

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“…Zhang et al [ 136 ], Chen et al [ 137 ] and Xu et al [ 138 ] remarked that adverse phenomena decreasing the carrying capacity of a railway subgrade soil (soil cave or karst sinkhole collapse) could severely impact the latter’s viability and train derailment risk. Thus, the importance of a train track subgrade SHM.…”

Section: Geotechnical Applicationsmentioning

confidence: 99%

A Review of Recent Distributed Optical Fiber Sensors Applications for Civil Engineering Structural Health Monitoring

Bado

Casas

2021

Sensors

208

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The present work is a comprehensive collection of recently published research articles on Structural Health Monitoring (SHM) campaigns performed by means of Distributed Optical Fiber Sensors (DOFS). The latter are cutting-edge strain, temperature and vibration monitoring tools with a large potential pool, namely their minimal intrusiveness, accuracy, ease of deployment and more. Its most state-of-the-art feature, though, is the ability to perform measurements with very small spatial resolutions (as small as 0.63 mm). This review article intends to introduce, inform and advise the readers on various DOFS deployment methodologies for the assessment of the residual ability of a structure to continue serving its intended purpose. By collecting in a single place these recent efforts, advancements and findings, the authors intend to contribute to the goal of collective growth towards an efficient SHM. The current work is structured in a manner that allows for the single consultation of any specific DOFS application field, i.e., laboratory experimentation, the built environment (bridges, buildings, roads, etc.), geotechnical constructions, tunnels, pipelines and wind turbines. Beforehand, a brief section was constructed around the recent progress on the study of the strain transfer mechanisms occurring in the multi-layered sensing system inherent to any DOFS deployment (different kinds of fiber claddings, coatings and bonding adhesives). Finally, a section is also dedicated to ideas and concepts for those novel DOFS applications which may very well represent the future of SHM.

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“…Baer et al, 2018) and probably optic fibre (e.g. Chen et al, 2020;Hussaini et al, 2015). These 'hotspots' can be the target of detailed site investigation and monitoring programmes aimed at assessing the hazard and managing the potential risk.…”

Section: There Are Numerous Transportation Infrastructures In the Ebromentioning

confidence: 99%

Sinkhole subsidence monitoring combining terrestrial laser scanner and high‐precision levelling

Sevil

Benito‐Calvo

Gutiérrez

2021

Earth Surf Processes Landf

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Sinkhole subsidence damage on transportation infrastructure is a particularly problematic hazard that has rapidly increased in numerous karst regions worldwide. The quantitative characterization of the deformation is fundamental for the design of effective mitigation measures and to prevent potential accidents. Nonetheless, there are a limited number of investigations addressing the monitoring of specific active sinkholes through the application of high-precision and high-resolution methods.Here, we present a sinkhole monitoring approach including the synergistic combination of high-precision levelling and high-resolution terrestrial laser scanner (TLS). The method has been satisfactorily tested in an active sinkhole affecting a railway corridor, which includes conventional and high-speed railway lines. The main outcome is the first example of low-error (±3 mm) 3D displacement models of an active sinkhole generated with TLS data without the use of ground control points. The methodological advance related to the 3D geometric alignment of successive point clouds without ground control points simplifies the logistics of TLS data collection and expands the potential sites where this technique can be applied, including non-accessible areas. The combination of geomorphological mapping and ground-penetrating radar provided critical data for sinkhole site characterization and design of the monitoring surveys. Subsequently, the integration of high-precision levelling and TLS data provided accurate information on spatio-temporal subsidence patterns (rates, kinematic style) and the precise location of the boundaries of the area affected by ground deformation in accessible and non-accessible zones.

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Experimental study on sinkhole collapse monitoring based on distributed Brillouin optical fiber sensor

Cited by 19 publications

References 6 publications

The Application of Distributed Optical Fiber Sensors (Botda) to Sinkhole Monitoring. Review and the Case of a Damaging Sinkhole in the Ebro Valley Evaporite Karst (Ne Spain)

The Application of Distributed Optical Fiber Sensors (Botda) to Sinkhole Monitoring. Review and the Case of a Damaging Sinkhole in the Ebro Valley Evaporite Karst (Ne Spain)

A Review of Recent Distributed Optical Fiber Sensors Applications for Civil Engineering Structural Health Monitoring

Sinkhole subsidence monitoring combining terrestrial laser scanner and high‐precision levelling

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