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laomo001(fjtony163代发): 金币+30, 代发 2016-05-03 13:33:59
fjtony163: 翻译EPI+1, 代发 2016-05-03 13:34:05
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Four 【FBG-based】 sensors were designed to monitor an artificial landslide occurring in the Tangshan of Nanjing, southeast China. In this study, the artificial landslide was simulated by excavating on a hillock with machine and human, in which the four sensors were installed. A sensing system【， which consists】 of the four special sensors, optical fiber, and static fiber grating demodulation instrument SM125, PC and related software， was【proposed】in this study, and lots of strain data 【were】 generated by using this system. The result shows that the upper FBG has a better sensitivity than the lower FBG 【does】 among all the four sensors. The Sensor No.2 and No.4 【can monitor】 【a smaller scale】 landslide than Sensor No.1 and No.3 can do. 【With higher rigidity】, hard sensors (No.1 and No.2) have 【higher】 adaptability to hard environment 【in】 big landslide, 【and therefore】should be installed in the nearby landslide area【；】while soft sensors (No.3 and No.4)【 should be installed in a distance to landslide body】 【for being more easily damaged in big landslide】. In addition, a clear tendency of strain variation can be monitored by soft sensors, which will be used in hazard prediction and 【early alarm】. |
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