Research Article
Experimental Study on Overburden Deformation Evolution under Mining Effect Based on Fiber Bragg Grating Sensing Technology
Table 1
Wavelength drift of the FBG sensor.
| | Sensor number | Before loading (pm) | 1st level loading (pm) | 2nd level loading (pm) | 3rd level loading (pm) | 4th level loading (pm) |
| | FBG1 | 0 | 95.1 | 189.63 | 285.85 | 373.5 | | FBG2 | 0 | 97.61 | 193.58 | 289.86 | 381.61 | | FBG3 | 0 | 97.79 | 196.36 | 293.79 | 386.08 |
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