Research on a Numerical Simulation and Prediction Model of Floor Mining Failure Depth in the Chenghe Mining Area

Table 3

Comparison of in situ values and fitting values of the working face floor failure depth in different mining areas.

Serial number	Name of the working face	In situ measured value of floor failure depth (m)	Fitting values in formula (1)	Fitting values in formula (2)	Empirical value in formula (3)	Empirical value in formula (4)	Empirical value in formula (5)
1	1100 working face of the Magouliang coal mine in Hancheng	13.00	10.10	9.98	13.65	13.96	10.57
2	1208 working face of the Shuanggou coal mine in Zibo	9.50	11.26	11.04	14.73	14.88	12.14
3	4707 big working face of the Jingxing no. 1 coal mine	6.50	5.96	5.98	5.56	6.37	3.92
4	32031(1) working face of the Wucun coal mine	9.70	8.43	8.32	8.25	9.07	6.42
5	3305 working face of the Wucun coal mine	11.70	13.65	11.12	13.65	13.96	11.40
6	1204 working face of the Shuanggou coal mine in Zibo	10.50	12.81	12.58	17.96	17.57	15.55
7	7607 narrow working face of the Xingtai coal mine	9.70	6.82	6.95	7.17	8.02	4.85
8	7607 wide working face of the Xingtai coal mine	11.70	10.01	10.14	11.49	12.06	9.16
9	11-014 working face of the Caocun coal mine	8.50	8.61	8.43	11.49	12.06	8.16
10	7406 working face of the Baizhuang coal mine in Feicheng	9.75	10.54	10.39	14.73	14.88	11.62
11	22510 working face of the Chenghe no. 2 coal mine	10.00	9.78	9.62	11.49	12.06	9.01
12	4707 s-1 working face of the Jingxing no. 1 coal mine	8.00	4.20	4.51	4.37	5.09	2.74
13	4707 s-2 working face of the Jingxing no. 1 coal mine	6.00	4.20	4.22	4.37	5.09	2.74
14	5701(1) working face of the Jingxing no. 3 coal mine	3.50	1.40	1.38	3.94	4.60	0.84
15	13506 working face of the Wangcun coal mine	11.35	11.41	11.28	14.19	14.42	11.87
16	5206 working face of the inclined shaft in the Wangcun coal mine	13.87	12.12	12.00	16.89	16.68	14.25
17	24508 working face of the Chenghe no. 2 coal mine	8.30	7.75	7.77	7.17	8.02	5.52
18	22507 working face of the Dongjiahe coal mine	10.75	10.48	10.45	13.00	13.40	10.41