Table 3 Multi source information and stability prediction.

From: Research on multi-source information responses and instability warning in the deformation and failure process of coal and rock

Serial number	Acoustic emission information				Ultrasonic information		Actual Combined Hazard Class	Model Predicted Hazard Rating	Coal mass stability degree
	Ringing technology/times	Hazard Index	b-value	Hazard index	Wave velocity (m·s^− 1)	Hazard index	Actual Combined Hazard Class	Model Predicted Hazard Rating	Coal mass stability degree
1	200	0.40	0.53	0.51	2100	0.06	0.47	0.43	Safer
2	260	0.34	1.50	0.47	1563	0.08	0.42	0.48	Safer
3	400	0.22	1.21	0.18	600	0.22	0.30	0.31	Safer
4	380	0.24	1.67	0.65	800	0.16	0.51	0.62	More dangerous
5	900	0.44	2.02	1	1789	0.07	0.33	0.35	Safer
6	150	0.07	1.29	0.26	965	0.13	0.22	0.22	Safe
7	660	0.50	1.60	0.57	129	1	1	0.99	Hazardous
8	1200	0.14	1.23	0.20	1800	0.07	0.20	0.02	Safe
9	800	0.22	0.91	0.13	770	0.17	0.25	0.23	Safe
10	396	0.25	1.17	0.14	1760	0.07	0.11	0.08	Safe
11	360	0.05	0.82	0.22	1752	0.07	0.15	0.22	Safe
12	586	0.04	1.12	0.09	1500	0.08	0.10	0.05	Safe
13	600	0.50	1.36	0.33	1530	0.08	0.44	0.40	Safer
14	1200	0.50	0.57	0.47	1496	0.08	0.51	0.66	More dangerous
15	1600	0.86	0.63	0.41	1650	0.10	0.66	0.70	More dangerous
16	1750	1.00	0.62	0.42	1200	0.11	0.74	0.66	More dangerous
17	1100	0.41	1.15	0.12	1369	0.09	0.30	0.32	Safer
18	800	0.14	0.56	0.48	1230	0.11	0.35	0.35	Safer
19	896	0.23	0.55	0.49	896	0.14	0.22	0.25	Safer
20	829	0.17	0.45	0.59	760	0.17	0.45	0.33	Safer
21	136	0.46	0.63	0.41	763	0.17	0.50	0.55	More dangerous
22	579	0.06	0.76	0.28	980	0.13	0.27	0.33	Safer
23	789	0.13	0.55	0.49	900	0.14	0.37	0.32	Safer
24	765	0.11	0.53	0.51	640	0.20	0.40	0.36	Safer
25	562	0.07	0.62	0.42	580	0.22	0.18	0.20	Safe
26	298	0.31	1.89	0.87	790	0.16	0.65	0.66	More dangerous
27	176	0.42	1.57	0.54	530	0.24	0.55	0.60	More dangerous
28	196	0.40	1.60	0.57	680	0.19	0.56	0.55	More dangerous
29	180	0.42	1.23	0.20	697	0.19	0.39	0.29	Safer
30	500	0.13	0.67	0.37	768	0.17	0.32	0.30	Safer

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