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ALSO AVAILABLE AS APPLICATION NOTES
Fiber Optic Leak Detection System for Gas and Poisonous/Flammable Liquids Bridge Instrumentation and Structural Health Monitoring Dam Safety and Monitoring Instrumentation Instrumentation of Historical Monuments Instrumentation of Nuclear Power Plants Geotechnical and Structural Monitoring Instrumentation of Storage Facilities Tunnel Instrumentation Mine Instrumentation Cliff Instrumentation Others
OTHER PROJECTS REFERENCES
Polyfunctional technical textiles - Italy (2006-2010) Zimmersrode landslide monitoring project - Germany (2009) Brammenterminal settlement monitoring project - Netherlands (2009) Soil subsidence monitoring project - United States (2010)
Soil Settlement / Subsidence Monitoring System
APPLICATION NOTE
DiView-DiTeST Software
Main System Specifications
• Distributed fiber optic sensors for soil settlement and subsidence measurements
• Measurement range up to tens of kilometers, depending on the fiber optic sensor model
• Thousands of measurement points along a single fiber • Spatial resolution up to 0.5 m • Proven and tested concept • Continuous and automatic monitoring • Central Database • Automatic alerting • Insensitive to electromagnetic interferences
ALSO AVAILABLE AS APPLICATION NOTES
Fiber Optic Leak Detection System for Gas and Poisonous/Flammable Liquids Bridge Instrumentation and Structural Health Monitoring Dam Safety and Monitoring Instrumentation Instrumentation of Historical Monuments Instrumentation of Nuclear Power Plants Geotechnical and Structural Monitoring Instrumentation of Storage Facilities Tunnel Instrumentation Mine Instrumentation Cliff Instrumentation Others
OTHER PROJECTS REFERENCES
Polyfunctional technical textiles - Italy (2006-2010) Zimmersrode landslide monitoring project - Germany (2009) Brammenterminal settlement monitoring project - Netherlands (2009) Soil subsidence monitoring project - United States (2010)
Soil Settlement / Subsidence Monitoring System
APPLICATION NOTE
DiView-DiTeST Software
Main System Specifications
• Distributed fiber optic sensors for soil settlement and subsidence measurements
• Measurement range up to tens of kilometers, depending on the fiber optic sensor model
• Thousands of measurement points along a single fiber • Spatial resolution up to 0.5 m • Proven and tested concept • Continuous and automatic monitoring • Central Database • Automatic alerting • Insensitive to electromagnetic interferences
Roctest Ltd. 680 Birch Saint-Lambert, QC J4P 2N3 CANADA Phone 1-450-465-1113 Toll Free 1-877-ROCTEST Fax 1-450-465-1938 Email [email protected] Web www.roctest.com
Telemac SAS 10, avenue Eiffel 77220 Gretz-Armainvilliers FRANCE Phone +33 1 64 06 40 80 Fax +33 1 64 06 40 26 Email [email protected] Web www.telemac.fr
Smartec SA Via Pobiette 11 CH-6928 Manno SWITZERLAND Phone +41 91 610 1800 Fax +41 91 610 1801 Email [email protected] Web www.smartec.ch
EAPN-Settlement-110923
Soil Settlement / Subsidence Monitoring System
Distributed fiber optic technology offers the capability to measure strain and deformation at thousands of points along a single fiber up to tens of kilometers. This is of particular interest for geotechnical monitoring of sensitive infrastructures, where it allows detection and localization of ground movements such as slope failure and sinkhole. Fiber optic sensing system offers the ability to detect and localize deformation induced by geotechnical movements, allowing the monitoring of several kilometers with a single instrument and the localization of an event with a precision better than 1 meter. Ground settlements and deformations induce the fiber optic sensor in tension or compression by changing its tensile state. These variations of tensile state can be detected, localized and quantified.
A short light pulse, at a defined wavelength, is injected into a fiber optic. During its propagation, light interacts with the fiber as the result of a Brillouin scattering effect. This interaction tends to change the physical properties of the light, and generates a backscatter effect. The backscattered light is collected and analyzed by the DiTeSt BOTD analyzer who determines localization of the event along the fiber optic sensor, as well as its magnitude. The monitoring system developed by Roctest is a combination of fiber optic, optoelectronic instruments and DiView data acquisition software. Cables are normally embedded in the ground and integrated in geotextile in order to enhance mechanical interaction with surrounding soils. The possibility to cover long distances and the fiber optic sensor robustness allows the system to be suitable for large scale projects. The presence of customized data management software enables a continuous, automatic and easy monitoring with the possibility to trigger alarms in case events are detected.
Roctest (USA) PO Box 3568 Champlain, NY 12919-3568 USA Phone 1-877-ROCTEST Fax 1-450-465-1938 Email [email protected] Web www.roctest.com
Roctest Ltd. 680 Birch Saint-Lambert, QC J4P 2N3 CANADA Phone 1-450-465-1113 Toll Free 1-877-ROCTEST Fax 1-450-465-1938 Email [email protected] Web www.roctest.com
Telemac SAS 10, avenue Eiffel 77220 Gretz-Armainvilliers FRANCE Phone +33 1 64 06 40 80 Fax +33 1 64 06 40 26 Email [email protected] Web www.telemac.fr
Smartec SA Via Pobiette 11 CH-6928 Manno SWITZERLAND Phone +41 91 610 1800 Fax +41 91 610 1801 Email [email protected] Web www.smartec.ch
EAPN-Settlement-110923
Soil Settlement / Subsidence Monitoring System
Distributed fiber optic technology offers the capability to measure strain and deformation at thousands of points along a single fiber up to tens of kilometers. This is of particular interest for geotechnical monitoring of sensitive infrastructures, where it allows detection and localization of ground movements such as slope failure and sinkhole. Fiber optic sensing system offers the ability to detect and localize deformation induced by geotechnical movements, allowing the monitoring of several kilometers with a single instrument and the localization of an event with a precision better than 1 meter. Ground settlements and deformations induce the fiber optic sensor in tension or compression by changing its tensile state. These variations of tensile state can be detected, localized and quantified.
A short light pulse, at a defined wavelength, is injected into a fiber optic. During its propagation, light interacts with the fiber as the result of a Brillouin scattering effect. This interaction tends to change the physical properties of the light, and generates a backscatter effect. The backscattered light is collected and analyzed by the DiTeSt BOTD analyzer who determines localization of the event along the fiber optic sensor, as well as its magnitude. The monitoring system developed by Roctest is a combination of fiber optic, optoelectronic instruments and DiView data acquisition software. Cables are normally embedded in the ground and integrated in geotextile in order to enhance mechanical interaction with surrounding soils. The possibility to cover long distances and the fiber optic sensor robustness allows the system to be suitable for large scale projects. The presence of customized data management software enables a continuous, automatic and easy monitoring with the possibility to trigger alarms in case events are detected.
Roctest (USA) PO Box 3568 Champlain, NY 12919-3568 USA Phone 1-877-ROCTEST Fax 1-450-465-1938 Email [email protected] Web www.roctest.com
