Fibre optic monitoring system for the determination of segment joint movements inside a hydro power dam

Helmut Woschitz; Ferdinand Klug; Werner Lienhart

doi:10.1117/12.2059682

2 June 2014 Fibre optic monitoring system for the determination of segment joint movements inside a hydro power dam

Helmut Woschitz, Ferdinand Klug, Werner Lienhart

Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 91579N (2014) https://doi.org/10.1117/12.2059682
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain

Abstract

In recent years hydro power stations were rebuilt to more efficient pumped storage power stations. This changed the loading conditions and new monitoring concepts are required. We developed a FBG based automatic monitoring system for the simultaneous measurement of concrete segment joints. With a fibre optic testing facility sensor nonlinearity and hysteresis effects were investigated. Using selected sensors the requested accuracy of 0.02 mm for deformations up to 3 mm can be achieved. Several sensors were installed in a hydro power dam. First results show an increased number of load cycles and smaller movements for the dam in pumping mode.

Citation Download Citation

Helmut Woschitz, Ferdinand Klug, and Werner Lienhart "Fibre optic monitoring system for the determination of segment joint movements inside a hydro power dam", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91579N (2 June 2014); https://doi.org/10.1117/12.2059682

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