An Experiment Monitoring Signals of Coal Bed Simulation under Forced Vibration Conditions

Table 16

IMF component energy percentages of effective microseism signals by EEMD.

IMF components	Working condition 43 (%)	Working condition 53 (%)	Working condition 63 (%)
IMF_h1	70.7	64.1	64.5
IMF_h2	27.4	29.4	32.8
IMF_h3	1.31	5.03	1.9
IMF_h4	0.384	1.07	0.414
IMF_h5	0.0921	0.207	0.157
IMF_h6	0.0296	0.0651	0.0773
IMF_h7	0.0149	0.0285	0.0465
IMF_h8	0.00777	0.0172	0.027
IMF_h9	0.00509	0.00983	0.0136
IMF_h10	0.0021	0.00427	0.00626
IMF_h11	0.00103	0.00192	0.00445
IMF_h12	0.000539	0.000885	0.00212
IMF_h13	0.000197	0.000562	0.000543
IMF_h14	0.000227	0.000847	0.001
IMF_h15		0.000524	0.000759
IMF_h16