Abstract
To help reduce the impact of geo-hazards, an innovative landslide early-warning technology based on an energy demodulation-based fiber optic sensing (FOS-LW for short) technology, is introduced in this paper. FOS-LW measures the energy change in a sensing fiber at the segment of micro-bending, which can be caused by landslide movements, and automatically raises an alarm as soon as the measured signal intensity in the fiber reaches a pre-set threshold. Based on the sensing of micro-bending losses in the fiber optics, a two-event sensing algorithm has been developed for the landslide early-warning. The feasibility of the FOS-LW technology is verified through laboratory simulation and field tests. The result shows that FOS-LW has some unique features—such as the graded alarm, real-time responses, remote monitoring, low cost and passive optical network—and can be applied in the early-warning of landslides.
Highlights
Disasters associated with severe landslides are common world-wide
The FOS-LW senses the deformation of the soil and rock mass through a change of light energy senses deformation of the and rock mass through a change of light intensity the fiber optic the sensor cable
Different types of physical and mechanical parameters associated with landslides may require designs of different event sensors
Summary
Disasters associated with severe landslides are common world-wide. Landslides contribute thousands of deaths per year and economic losses from property damage in the billions of dollars [1,2,3]. Conventional methods for landslide early-warning include inclinometer, displacement meter, strain gauges, water level meter, photogrammetry, and others [6]. These warning tools are point-monitoring or small-scale, sometimes, which cannot acquire the sufficient key signals for early-warning of a landslide [7]. Slope stability is mainly affected by three basic factors, namely geo-structural, environmental, and human-induced (artificial) factors. An effective early-warning of a landslide should focus on the deformation monitoring of the slope. An innovative landslide early-warning technology is introduced. It is able totechnology monitor the deformation of both soil and mass slopes optical and serves as[9,10,11]. Rock mass of slopes and serves as an early-warning technology for landslides
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
