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Case studies of high-sensitivity monitoring of natural and engineered slopes 被引量:2
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作者 Werner Lienhart 《Journal of Rock Mechanics and Geotechnical Engineering》 SCIE CSCD 2015年第4期379-384,共6页
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... 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. 展开更多
关键词 Structural health monitoring fiber optic sensors Brillouin optical frequency domain analyzer(BOFDA) SOFO sensors Reinforced eart
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