Application of Distributed Optical Fiber Sensing Technique in Monitoring the Ground Deformation

Table 2

The subsidence data measured with settlers.

Situations	Subsidence (mm)
	Number 1	Number 2	Number 3	Number 4	Number 5	Number 6
1	0	−30.34	0	0	0	0
2	−35.13	−32.02	0	0	0	0
3	−36.8	−32.06	−46.14	0	−0.05	0
4	−36.89	−32.09	−46.21	0	−0.06	0
5	−36.93	−108.19	−46.25	0	−0.06	0
6	−37.34	−109.08	−46.41	0	−0.09	0
7	−107.85	−110.8	−119.64	0	−0.1	0
8	−107.88	−110.84	−119.65	0	−0.1	0
9	−107.84	−110.79	−119.69	0	−0.13	0