Study on the Safety Thickness of Rock Strata for Outburst Prevention in Deep Tunnel Based on Numerical Modeling and Backpropagation Neural Network

Table 8

Training sample data.

Serial number	Sample input layer				Sample output layer
	Water pressure (MPa) A	Side pressure coefficient B	Fault width (m) C	Buried depth (m) D	Safe rock thickness (m) E
1	2.4	1.5	10	650	8.24
2	1.2	1.5	10	650	7.4
3	3.6	1.5	10	650	8.67
4	4.8	1.5	10	650	9.05
5	2.4	1.25	10	650	6.97
6	2.4	1.75	10	650	9.17
7	2.4	2	10	650	11.17
8	2.4	1.5	20	650	8.79
9	2.4	1.5	25	650	9.2
10	2.4	1.5	10	750	8.75
11	2.4	1.5	10	850	9.44
12	2.4	1.5	10	950	9.89
13	3	1.5	10	650	8.42
14	1.8	1.5	10	650	7.81
15	2.1	1.5	10	650	8.08
16	1.5	1.5	10	650	7.56
17	3.3	1.5	10	650	8.55
18	1	1.5	10	650	7.22
19	2	1.5	10	650	8.01
20	4	1.5	10	650	8.78
21	2.4	1.3	10	650	7.22
22	2.4	1.35	10	650	7.48
23	2.4	1.4	10	650	7.7
24	2.4	1.45	10	650	7.98
25	2.4	1.55	10	650	8.49
26	2.4	1.6	0	650	8.72
27	2.4	1.65	10	650	8.89
28	2.4	1.7	10	650	9.03
29	2.4	1.8	10	650	9.39
30	2.4	1.5	12	650	8.34
31	2.4	1.5	14	650	8.4
32	2.4	1.5	16	650	8.5
33	2.4	1.5	18	650	8.58
34	2.4	1.5	22	650	8.9
35	2.4	1.5	24	650	9.12
36	2.4	1.5	26	650	9.22
37	2.4	1.5	28	650	9.29
38	2.4	1.5	10	760	8.79
39	2.4	1.5	10	770	8.85
40	2.4	1.5	10	780	8.92
41	2.4	1.5	10	790	9.02
42	2.4	1.5	10	810	9.15
43	2.4	1.5	10	820	9.18
44	2.4	1.5	10	830	9.26
45	2.4	1.5	10	840	9.36
46	2.4	1.5	10	860	9.42
47	2.4	1.5	10	870	9.46
48	2.4	1.5	10	880	9.51
49	2.4	1.5	10	890	9.53
50	2.4	1.5	10	900	9.58
51	2.4	1.5	10	910	9.63