Case sharing ｜ Stable monitoring using the fTB2505 monitoring system

Slope stability monitoring

The stability of many slopes is of great economic, social and political importance. Traditional monitoring systems can only monitor a limited number of locations, and it is possible to miss unstable locations.

fibrisTerre's distributed fTB2505 optical fiber sensor monitoring system can simultaneously monitor the deep and surface deformation of the slope. Its long-distance monitoring range is up to 25 kilometers, it can continuously monitor the vertical displacement of hundreds of locations, and can monitor the slope deformation within a few square kilometers on its own.

Deep slope displacement monitoring

By installing the optical cable into the vertical borehole, the strain distribution of the borehole can be continuously measured. Through conversion, the strain data can be converted into soil displacement. Depending on the spacing and depth of the vertical profile, up to hundreds of such monitoring sites can be connected to an automated sensing system to achieve continuous and unmanned monitoring, becoming an economically feasible solution.

Shallow slope deformation monitoring

Geotextiles embedded in fiber optic cables can be placed under the surface of the slope. Any deformation of the slope surface will deform the geotextile. The strain is then detected and measured with an embedded sensor fiber optic cable.

Geotextiles equipped with optical fiber sensors can be integrated into geological structures, such as river embankments, unstable natural soil slopes and open-pit mine slopes.

Any excessive soil deformation can be sensed by the sensor in time; so, before any costly accident occurs, appropriate measures can be taken.

Main features

1.

True distributed measurement

The system can measure every meter area on the sensing fiber without missing any dangerous positions.

2.

Fully digitized, fast response

Fully digitized and automated, any excessive movement or strain can be checked within minutes.

3.

accurate locating

With a spatial resolution of up to 0.2m, the unstable slope area can be reduced to a precise position.

4.

Economic advantage

The remote automation of FTB 2505 eliminates the need for personnel on site for large-scale monitoring projects.

5.

Robustness

The fTB 2505 provides an industry-leading attenuation budget, and the sensor optical cable can still work in the harshest environment.

6.

Suitable for field use

With a weight of only 13 kg and a power consumption of only 60 W, the fTB 2505 is ideal for field use.

About fibrisTerre

fibrisTerre provides the next generation fiber monitoring system for structural health monitoring. With its groundbreaking BOFDA fiber optic sensing technology, fibrisTerre can provide the truly distributed and economically feasible solutions for critical engineering structure monitoring required by the industry.

Europe and the United States is FibrisTerre's agent service provider in China. For more information about fibrisTerre products, please contact Europe and the United States.