Goaf Site Stability Detection in the Overlap Area of Coal Mining Subsidence and Urban Construction

Table 2

Comparison between observation data and InSAR data.

No.	Bench mark (mm)	InSAR (mm)	Error (mm)
L1	−1	−5.19	4.19
L3	0	−6.91	6.91
L8	−3	−9.94	6.94
L10	−5	−10.21	5.21
L11	−5	−11.84	6.84
L12	−6	−12.03	6.03
L13	−11	−12.30	1.3
L14	−8	−13.21	5.21
L15	−10	−15.02	5.02
L16	−14	−16.82	2.82
n1	−36	−40.41	4.41
n3	−36	−33.56	2.44
n4	−27	−30.11	3.11
n6	−31	−33.42	2.42
n8	−43	−37.21	5.79
n9	−32	−37.33	5.33