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Brillouin optical time-domain analysis for geotechnical monitoring

Journal of Rock Mechanics and Geotechnical Engineering 2015年第4期7卷 458-462页

作者： L.Zeni L.Picarelli B.Avolio A.Coscetta R.Papa G.Zeni C.Di Maio R.Vassallo a.minardo DIII Second University of Naples Institute for Electromagnetic Sensing of the Environment (IREA) National Research Council DICDEA Second University of Naples School of Engineering University of Basilicata

In this paper, we show some recent experimental applications of Brillouin optical time-domain analysis （BOTDA） based sensors for geotechnical monitoring. In particular, how these sensors can be applied to detecting early movements of soil slopes by the direct embedding of suitable fiber cables in the ground is presented. Furthermore, the same technology can be used to realize innovative inclinometers, as well as smart foundation anchors.

关键词： Brillouin optical time-domain analysis(BOTDA)Tunnel engineeringDeformationDistributed monitoringHealth diagnosis

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Performance of Slope Behavior Indicators in Unsaturated Pyroclastic Soils

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Journal of Mountain Science 2015年第6期12卷 1434-1447页

作者： Luciano PICARELLI Emilia DAMIANO Roberto GRECO Aldo minardo Lucio OLIVARES Luigi ZENI Department of Civil Engineering Design Home Building and Environment Seconda Università di Napoli Department of Industrial and Information Engineering Seconda Università di Napoli

Landslide risk is increasing in many parts of the world due to growth of population and infrastructures. Therefore, an effort has to be made in developing new and cheap sensors for areas susceptible of landslides to continuously control the slope behaviour, until approaching failure conditions. The paper reported experimental data from smallscale physical models about the performance of Time Domain Reflectometry(TDR) and optical fibres, which act as the indicators of the incoming failure of slopes covered by unsaturated granular soils. Obtained results appear encouraging, since both sensors provide continuous information about the state of the slope, in terms of water content profiles and ongoing deformations, induced by rainwater infiltration, even immediately before the triggering of a fast landslide.

关键词： Unsaturated granular soils Slope monitoring Rapid landslide Optical fibre Time Domain Reflectometry Probe

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