Sinkhole collapse propagation studies through instrumented small-scale physical models
<p>Sinkholes are common geohazards, frequently responsible for sudden catastrophic ground collapse. Thus, effective monitoring would allow for further understanding of the mechanism of occurrence of sinkholes and lead to the development of a potential early warning system to provide an alarm o...
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2020-04-01
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| Series: | Proceedings of the International Association of Hydrological Sciences |
| Online Access: | https://www.proc-iahs.net/382/71/2020/piahs-382-71-2020.pdf |
| Summary: | <p>Sinkholes are common geohazards, frequently responsible for sudden
catastrophic ground collapse. Thus, effective monitoring would allow for
further understanding of the mechanism of occurrence of sinkholes and lead
to the development of a potential early warning system to provide an alarm
or a warning of incipient col-lapse. In the current study, fiber Bragg
gratings (FBGs) were used to instrument reduced scale models, simulating a
sinkhole event. The tests were conducted by embedding optic fiber sensors in
the soil and inducing failure until critical conditions were reached. FBG
sensors were manufactured in a single optic fiber cable. The measurements of
small horizontal strains were recorded simultaneously and in various
positions. Failure mechanism was found to relate to the backfill density,
and compaction.</p> |
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| ISSN: | 2199-8981 2199-899X |