Study on the Strata Movement Rule of the Ultrathick and Weak Cementation Overburden in Deep Mining by Similar Material Simulation: A Case Study in China

Table 7

Measurement accuracy (mm).

Photos from right camera	Photo no.	DZ62	DZ63	DZ64	DZ65	DZ66	DZ67
	P1	0.4	−0.23	0.1	−0.42	0.25	−0.88
	P2	−0.6	0.05	−0.2	−0.91	0.2	−0.54
	P3	−0.52	−0.24	0.1	−0.11	0.54	0.24
	P4	−0.57	0.52	0.52	0.85	0.47	0.18
	P5	−0.75	−0.1	0.22	−0.55	0.61	−0.2
	P6	−0.26	−0.35	0.32	−0.07	−0.09	0.7
	P7	−0.2	−0.54	−0.21	−0.09	−0.64	−0.24
	P8	−0.4	−0.29	−0.31	−0.97	−0.26	−0.54
	P9	0.56	0.56	0.31	−0.67	0.13	0.01
	P10	−0.58	−0.38	−0.4	0.85	0.65	0.37
	P11	0.08	0.71	0.13	0.27	0.33	0.52
	P12	−0.49	−0.13	−0.48	0.41	0.88	−0.69
	Accuracy	0.46
Photos from left camera	Photo no.	DZ68	DZ69	DZ70	DZ71	DZ72	DZ73
	P13	0.4	−0.3	−0.15	0.26	0.09	−0.15
	P14	0.71	0.47	0.94	0.74	0.22	0.59
	P15	0.29	0.4	0.29	0.63	0.7	0.69
	P16	0.5	0.23	−0.1	0.47	0.78	0.08
	P17	−0.82	−0.54	−0.2	0	−0.34	0.35
	Accuracy	0.48