case studies of high-sensitivity monitoring of natural and engineered slopes

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2015
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Abstract
High-sensitivity monitoring solutions are crucial for early warning systems of earth structures. In this paper, we discuss the design and implementation of such systems for natural and engineered slopes using two case studies. At the Gradenbach Observatory, one key element of the monitoring system is a large fiber optic strain rosette embedded in the slope. We demonstrate that the strain rosette can depict landslide deformations much earlier than geodetic sensors like GPS or total stations and is therefore well suitable for an early warning system. In a second application we report the construction of a reinforced earth structure using geogrids. A distributed fiber optic measurement system was installed to measure the current operating grade of the geogrids within the earth structure. About 2 km of Brillouin sensing cables were installed in the project area. It is demonstrated that the developed monitoring system is well suited for assessing the current state of health of reinforced earth structures.
Reference Key
lienhart2015journalcase Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Werner Lienhart
Journal journal of neurotrauma
Year 2015
DOI
10.1016/j.jrmge.2015.04.002
URL
http://www.sciencedirect.com/science/article/pii/S1674775515000505
Keywords
structural health monitoring fiber optic sensors underground construction rock mechanics soil mechanics

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