An Experimental Investigation on the Relationship between MS Frequency Response and Coal and Gas Outburst

Table 2

Signal energy distribution percentages of frequency bands in different stages.

FB	Energy distribution of Typical Signal /%						FB	Energy distribution of Typical Signal /%
	①	②	③	④	⑤	⑥		①	②	③	④	⑤	⑥
S0	1.15	5.37	1.91	3.51	3.28	74.76	S16	0.02	0.01	0.07	0.18	0.55	0.03
S1	16.58	47.77	8.59	2.26	0.62	13.60	S17	0.03	0.01	0.24	0.41	0.31	0.01
S2	3.15	6.54	32.27	1.80	0.56	0.84	S18	0.03	0.00	0.14	1.31	4.10	0.03
S3	14.06	34.68	5.44	1.01	0.34	5.77	S19	0.01	0.01	0.04	0.18	0.86	0.01
S4	0.20	0.06	1.34	1.46	0.94	0.05	S20	0.05	0.02	0.16	1.98	3.11	0.05
S5	0.23	0.21	3.26	7.56	0.95	0.07	S21	0.10	0.02	0.25	2.83	1.26	0.05
S6	0.97	1.89	2.51	0.45	0.76	0.59	S22	0.01	0.00	0.05	0.63	0.63	0.04
S7	0.35	1.21	1.47	0.80	0.61	0.12	S23	0.07	0.00	0.05	0.07	0.85	0.11
S8	0.63	0.13	1.51	2.69	5.49	0.23	S24	0.07	0.02	1.04	7.33	2.21	0.09
S9	0.84	0.07	0.98	0.91	13.27	0.13	S25	1.28	0.09	2.61	6.34	18.03	0.14
S10	32.13	0.13	3.05	7.69	4.03	0.15	S26	3.34	0.06	0.65	10.59	9.39	0.04
S11	5.31	0.69	1.29	5.10	7.45	0.67	S27	2.09	0.08	3.83	7.39	2.45	0.76
S12	0.49	0.11	1.79	1.63	0.57	0.06	S28	0.30	0.02	0.32	5.11	2.24	0.01
S13	1.27	0.06	6.25	2.53	0.76	0.05	S29	0.12	0.03	1.60	3.14	2.51	0.24
S14	10.48	0.64	12.75	1.84	3.93	0.07	S30	1.93	0.02	1.54	10.19	6.03	0.16
S15	1.93	0.04	2.77	0.18	0.84	0.05	S31	0.75	0.00	0.17	0.95	1.04	0.16