OPTICAL FIBER SCOURING SENSOR AND SCOURING AND SENSING SYSTEM USING THE SAME
PROBLEM TO BE SOLVED: To provide an optical fiber scouring sensor capable of collectively monitoring an overall river, without using much labor and cameras and a scouring and sensing system using the same. SOLUTION: Optical fiber cables 4-1 to 4-3, having weights 3-1 to 3-3 mounted at predetermined...
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Zusammenfassung: | PROBLEM TO BE SOLVED: To provide an optical fiber scouring sensor capable of collectively monitoring an overall river, without using much labor and cameras and a scouring and sensing system using the same. SOLUTION: Optical fiber cables 4-1 to 4-3, having weights 3-1 to 3-3 mounted at predetermined intervals, are disposed on a floodplain 1 of the river 11 to accurately distributedly sense physical amount information, such as temperature change, humidity change, strain or the like applied to optical fibers in the cables 4-1 to 4-3. As a result, it is not necessary to use much labor and cameras. That is, the optical fiber scour sensors 10 are disposed along the longitudinal direction of a levee body 12 on filling 18 and the floodplain 1 on a consolidation block 17 of a foundation embedded near a front normal and a front skirt of the body 12. Thus, strain generated at the sensor 10 by a scour is sensed, and a scour phenomenon long the longitudinal direction of the body 12 can be sensed distributedly. |
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