Study on Prediction of Coal-Gas Compound Dynamic Disaster Based on GRA-PCA-BP Model

Table 2

Partial dimensionless data of coal-gas compound dynamic disaster in No. 8 coal mine.

Number														Disaster or not
1	0.9397	0	0	0	0.9331	0.8567	1.0455	1.3431	1.237	0.7863	0.7863	0.8955	0.8746	1
2	0.9731	0	2.7259	0	1.8661	0.8567	1.0455	1.3431	1.0824	0.7863	0.6553	1.2336	0.7653	1
11	0.9942	1.3529	0	0	0.9331	1.0374	0.697	0.8705	0	1.1437	0	0.6323	1.5579	1
12	0.9942	1.3529	0	0	0.9331	1.0374	0.697	0.8705	0	1.1437	0	0.7177	2.2139	1
20	0.8501	0	0	0	0.9331	1.2414	1.0455	0.8705	0	0.7148	0	1.0015	0.7926	1
21	0.9309	4.0588	0	0	1.8661	1.0024	1.0455	1.0695	1.005	1.7156	1.4416	0.9154	1.8313	1
29	0.9485	0	0	1.1178	0.9331	1.1831	1.0455	1.169	1.8555	0.7863	1.31	0.9609	0.738	1
30	0.8027	0	0	1.2037	0.9331	0.6236	1.3939	0.8705	0.6185	2.216	0.7863	0.4059	0.41	0
38	0.8958	0	0	0	0.9331	0.8975	1.0455	1.1192	2.3193	1.4297	1.7037	1.0159	0.7106	1
39	1.4052	1.3529	5.7926	3.3533	0.9331	1.1831	1.0455	0.7461	0	0.7863	0	1.2671	0.492	0