Scientific Reports

Table 4 Strain energy statistics of different stress characteristic points.

From: Experimental investigation of the acoustic emission and energy evolution of bedded coal under uniaxial compression

Nos.	σ_cc			σ_ci			σ_cd			σ_p
Nos.	U	U^e	U^d	U	U^e	U^d	U	U^e	U^d	U	U^e	U^d
0°-1	0.01095	0.00657	0.00438	0.08930	0.07582	0.01348	0.19191	0.17826	0.01365	0.33052	0.31627	0.01425
0°-2	0.00695	0.00487	0.00208	0.07178	0.06028	0.01150	0.16096	0.13888	0.02208	0.26376	0.20935	0.05442
0°-3	0.00943	0.00429	0.00514	0.06774	0.05573	0.01200	0.17020	0.16034	0.00986	0.28615	0.28069	0.00546
30°-1	0.00969	0.00653	0.00316	0.07266	0.06508	0.00758	0.19208	0.18534	0.00674	0.35112	0.33658	0.01454
30°-2	0.01285	0.00779	0.00505	0.08088	0.07035	0.01053	0.19671	0.18618	0.01053	0.30707	0.29148	0.01559
30°-3	0.00643	0.00428	0.00214	0.04341	0.03966	0.00375	0.12540	0.12004	0.00536	0.21053	0.19930	0.01123
60°-1	0.00225	0.00161	0.00064	0.01693	0.01479	0.00214	0.03558	0.03376	0.00182	0.06109	0.05421	0.00688
60°-2	0.00249	0.00177	0.00072	0.01281	0.00897	0.00383	0.03277	0.02906	0.00371	0.06575	0.05394	0.01181
60°-3	0.00265	0.00135	0.00131	0.01015	0.00783	0.00232	0.02329	0.02178	0.00152	0.05674	0.04499	0.01175
90°-1	0.00600	0.00343	0.00257	0.02898	0.02469	0.00429	0.06122	0.05711	0.00411	0.11038	0.10709	0.00328
90°-2	0.00476	0.00320	0.00156	0.01963	0.01049	0.00914	0.04149	0.02822	0.01327	0.06686	0.05118	0.01568
90°-3	0.00318	0.00172	0.00146	0.02669	0.02265	0.00404	0.05955	0.05469	0.00486	0.09570	0.07763	0.01807

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