Geofluids

Research Article

Prediction of Grade Classification of Rock Burst Based on PCA-SSA-PNN Architecture

Table 2

Rock burst data.


No. of samples	Original index of rock burst prediction							New index of rock burst prediction				Rock burst grade
No. of samples								PCA₁	PCA₂	PCA₃	PCA₄	Rock burst grade

1	40.62	49.7	2.42	97.63	0.05	0.82	2.40	-9.82	12.67	-4.26	-5.51	IV
2	35.63	23.5	2.12	63.5	0.09	1.52	1.78	-89.75	-11.16	-2.43	0.14	III
3	84.54	22.2	4.1	77.74	0.18	3.81	0.92	0.62	48.54	-5.87	5.06	II
4	30.43	34.8	1.47	69.3	0.04	0.87	2.28	-76.55	9.80	-5.14	-2.80	IV
5	22.15	19.9	1.51	53.3	0.08	1.11	2.41	152.31	21.20	7.08	3.40	III
6	21.08	43.3	1.02	100.84	0.02	0.49	4.78	-96.69	-24.31	-1.32	-0.86	IV
7	26.51	31.8	1.2	91.49	0.04	0.83	3.45	-49.84	27.83	-7.36	-4.06	IV
8	43.49	28.6	2.11	55.92	0.07	1.52	1.29	-4.07	34.42	-3.91	-1.71	III
9	101.27	31	3.72	87.78	0.12	3.27	0.87	126.53	-46.30	9.27	5.08	III
10	62.88	33.3	2.66	96.78	0.08	1.89	1.54	123.80	-53.88	5.52	5.43	III
11	100.97	45.4	5.25	128.19	0.12	2.22	1.27	112.39	-1.58	-3.57	-6.35	III
12	43.15	36.6	2.09	102.18	0.06	1.18	2.37	-67.53	16.71	-5.44	-8.31	IV
13	123.03	48.6	8.42	124.53	0.17	2.53	1.01	-56.15	-33.90	0.44	10.88	III
14	78.87	28.8	3.57	80.44	0.12	2.74	1.02	1.37	51.01	-8.43	5.21	III
15	88.76	29.6	4.31	78.42	0.15	3.00	0.88	112.51	0.23	-4.60	-6.13	III
16	41.1	28.7	2.13	74.24	0.07	1.43	1.81	1.05	52.59	-4.10	5.27	III
17	74.83	24.9	3.16	70.21	0.13	3.01	0.94	112.59	-2.02	-2.44	-6.54	III
18	48.4	35.8	2.69	101.45	0.08	1.35	2.10	153.85	28.37	9.71	3.51	III
19	63.97	78.7	3.32	206.68	0.04	0.81	3.23	-64.88	9.74	-4.86	-3.00	IV
20	50.37	25.4	2.8	64.74	0.11	1.98	1.29	-36.29	-39.64	0.26	-0.89	III
21	55.39	36.9	3.08	98.63	0.08	1.50	1.78	111.20	-3.45	-2.19	-6.20	III
22	42.54	46.3	2.21	121.1	0.05	0.92	2.85	115.40	5.76	-2.58	-6.68	IV
23	132.64	88.9	4.45	238.75	0.05	1.49	1.8	132.22	-31.42	7.20	4.79	IV
24	136.26	88.9	5.95	239.82	0.07	1.53	1.76	114.73	3.43	-3.58	-6.64	IV
25	138.53	88.9	7.27	239.66	0.08	1.56	1.73	1.15	52.67	-3.98	5.23	IV
26	130.79	88.9	5.24	239.35	0.06	1.47	1.83	-62.49	-52.63	1.31	4.22	IV
27	128.45	88.9	6.34	238.92	0.07	1.44	1.86	-0.52	46.59	-6.98	5.32	IV
28	130.31	88.9	6.32	239.77	0.07	1.47	1.84	-98.72	-15.03	-2.23	6.51	IV
29	136.46	54.9	7.67	121.45	0.14	2.49	0.89	-55.89	-31.71	-0.85	-2.98	III
30	141.58	54.9	10.43	120.34	0.19	2.58	0.85	-123.82	22.46	24.15	-2.50	III
31	141.67	54.9	10.56	120.42	0.19	2.58	0.85	-3.66	37.64	-5.36	5.37	III
32	137.91	54.9	8.13	121.36	0.15	2.51	0.88	136.03	-22.35	2.09	4.70	III
33	140.79	54.9	5.92	121.08	0.11	2.56	0.86	-54.77	-11.16	-3.13	-4.46	III
34	135.84	54.9	6.74	120.90	0.12	2.47	0.89	56.89	-51.74	2.07	-2.60	III
35	126.23	54.9	7.10	121.18	0.13	2.30	0.96	-83.62	-23.39	-1.53	-0.06	III
36	118.95	110	7.74	262.88	0.07	1.08	2.21	-62.86	19.60	-5.41	-1.73	III
37	108.54	110	11.54	262.67	0.10	0.99	2.42	-54.94	-26.42	-1.00	-3.58	III
38	171.24	110	22.45	262.00	0.20	1.56	1.53	-89.54	-32.39	-0.57	7.65	II
39	84.98	110	6.70	262.59	0.06	0.77	3.09	0.18	47.11	-6.13	5.07	III
40	92.48	110	11.51	262.64	0.10	0.84	2.84	-83.61	61.48	42.32	-4.27	III
41	164.4	110	18.85	263.04	0.17	1.49	1.6	-72.71	-43.18	-0.04	-3.16	II
42	66	9.1	33.00	25.40	3.63	7.25	0.38	-54.54	-19.06	-1.52	-1.67	I
43	114	18.1	57.00	48.32	3.15	6.30	0.42	-111.56	-33.10	-0.58	-0.18	I