Monitoring of Strain and Temperature in an Open Pit Using Brillouin Distributed Optical Fiber Sensors
Marble quarries are quite dangerous environments in which rock falls may occur. As many workers operate in these sites, it is necessary to deal with the matter of safety at work, checking and monitoring the stability conditions of the rock mass. In this paper, some results of an innovative analysis...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2020-03-01
|
| Series: | Sensors |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1424-8220/20/7/1924 |
| _version_ | 1797571982123859968 |
|---|---|
| author | Chiara Lanciano Riccardo Salvini |
| author_facet | Chiara Lanciano Riccardo Salvini |
| author_sort | Chiara Lanciano |
| collection | DOAJ |
| description | Marble quarries are quite dangerous environments in which rock falls may occur. As many workers operate in these sites, it is necessary to deal with the matter of safety at work, checking and monitoring the stability conditions of the rock mass. In this paper, some results of an innovative analysis method are shown. It is based on the combination of Distributed Optical Fiber Sensors (DOFS), digital photogrammetry through Unmanned Aerial Vehicle (UAV), topographic, and geotechnical monitoring systems. Although DOFS are currently widely used for studying infrastructures, buildings and landslides, their use in rock marble quarries represents an element of peculiarity. The complex morphologies and the intense temperature range that characterize this environment make this application original. The selected test site is the Lorano open pit which is located in the Apuan Alps (Italy); here, a monitoring system consisting of extensometers, crackmeters, clinometers and a Robotic Total Station has been operating since 2012. From DOFS measurements, strain and temperature values were obtained and validated with displacement data from topographic and geotechnical instruments. These results may provide useful fundamental indications about the rock mass stability for the safety at work and the long-term planning of mining activities. |
| first_indexed | 2024-03-10T20:48:15Z |
| format | Article |
| id | doaj.art-c692197cff1f4337b3eb4ab3696662d3 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T20:48:15Z |
| publishDate | 2020-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-c692197cff1f4337b3eb4ab3696662d32023-11-19T20:10:29ZengMDPI AGSensors1424-82202020-03-01207192410.3390/s20071924Monitoring of Strain and Temperature in an Open Pit Using Brillouin Distributed Optical Fiber SensorsChiara Lanciano0Riccardo Salvini1Earth and Physical Sciences and Centre for Geotechnologies CGT, Department of Environment, University of Siena, Via Vetri Vecchi 34, 52027 San Giovanni Valdarno (AR), ItalyEarth and Physical Sciences and Centre for Geotechnologies CGT, Department of Environment, University of Siena, Via Vetri Vecchi 34, 52027 San Giovanni Valdarno (AR), ItalyMarble quarries are quite dangerous environments in which rock falls may occur. As many workers operate in these sites, it is necessary to deal with the matter of safety at work, checking and monitoring the stability conditions of the rock mass. In this paper, some results of an innovative analysis method are shown. It is based on the combination of Distributed Optical Fiber Sensors (DOFS), digital photogrammetry through Unmanned Aerial Vehicle (UAV), topographic, and geotechnical monitoring systems. Although DOFS are currently widely used for studying infrastructures, buildings and landslides, their use in rock marble quarries represents an element of peculiarity. The complex morphologies and the intense temperature range that characterize this environment make this application original. The selected test site is the Lorano open pit which is located in the Apuan Alps (Italy); here, a monitoring system consisting of extensometers, crackmeters, clinometers and a Robotic Total Station has been operating since 2012. From DOFS measurements, strain and temperature values were obtained and validated with displacement data from topographic and geotechnical instruments. These results may provide useful fundamental indications about the rock mass stability for the safety at work and the long-term planning of mining activities.https://www.mdpi.com/1424-8220/20/7/1924marble quarrydistributed optical fiber sensorsbrillouin shift frequencystraintemperatureunmanned aerial vehicle |
| spellingShingle | Chiara Lanciano Riccardo Salvini Monitoring of Strain and Temperature in an Open Pit Using Brillouin Distributed Optical Fiber Sensors Sensors marble quarry distributed optical fiber sensors brillouin shift frequency strain temperature unmanned aerial vehicle |
| title | Monitoring of Strain and Temperature in an Open Pit Using Brillouin Distributed Optical Fiber Sensors |
| title_full | Monitoring of Strain and Temperature in an Open Pit Using Brillouin Distributed Optical Fiber Sensors |
| title_fullStr | Monitoring of Strain and Temperature in an Open Pit Using Brillouin Distributed Optical Fiber Sensors |
| title_full_unstemmed | Monitoring of Strain and Temperature in an Open Pit Using Brillouin Distributed Optical Fiber Sensors |
| title_short | Monitoring of Strain and Temperature in an Open Pit Using Brillouin Distributed Optical Fiber Sensors |
| title_sort | monitoring of strain and temperature in an open pit using brillouin distributed optical fiber sensors |
| topic | marble quarry distributed optical fiber sensors brillouin shift frequency strain temperature unmanned aerial vehicle |
| url | https://www.mdpi.com/1424-8220/20/7/1924 |
| work_keys_str_mv | AT chiaralanciano monitoringofstrainandtemperatureinanopenpitusingbrillouindistributedopticalfibersensors AT riccardosalvini monitoringofstrainandtemperatureinanopenpitusingbrillouindistributedopticalfibersensors |