F. Amberg's scientific contributions
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Publications (3)
Based on many years experience, the well approved Tunnel Seismic Prediction System (TSP) has been substantially enhanced for online geological prognosis in underground construction. The method provides high resolution seismic images of the rock mass ahead of a tunnel face via an array of standard anchor rods. These contain 3D-geophones and can rout...
A theoretical concept and its experimental realization of a fiber-optic Bragg grating strain sensor system to measure dynamic deformations in rock masses are presented. The system has been designed in order to monitor strain variations in the range of 10-9 within a bandwidth of 0.1 to 2 kHz. First promising results from field experiments are shown...
A theoretical concept and its experimental realization of a fiber-optic Bragg grating strain sensor system to measure dynamic deformations in rock masses are presented. The system has been designed in order to monitor strain variations in the range of 10-9 within a bandwidth of 0.1 to 2 kHz. First promising results from field experiments are shown...
Citations
... The seismic measurements were conducted using the 3D underground seismic system of the GFZ (Borm et al. 2003) that consists, of a pneumatic impact source, 3-component geophones (28 Hz) for borehole emplacement, and rock anchors. To reduce the effects of the ambient noise, the receivers were placed in the rock anchors at a depth of 2 m (Borm et al. 2003). ...
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... Further, the conventional strain gauges used in the monitoring of axial strains has some disadvantages [23]. Fiber optic sensors are becoming a well-established technology for a variety of geophysical and civil engineering applications [24]. Schmidt-Hattenberger et al. [25] conducted strain measurements by fiber Bragg grating sensors for in situ pile loading tests. ...
