Analysis of Similarities and Differences between Acoustic Emission and Charge Signal Based on Fractal Characteristics of Coal Fracture

Table 1

Size and quality of the fragments.

	0–2.5	2.5–5	5–10	10–15	15–20	20–30	30–40	40–50	50–100	Maximum diameter (mm) and mass (g)	Total mass (g)	Fractal dimension
M01	9.38	10.42	25.66	13.32	9.93	22.6	46.9	43.77	95.4	51–83.29	277.38	2.08465
M02	15.92	12.48	23.91	7.29	0	15.87	44.33	60.65	36.81	63.02–34.26	217.26	2.29279
M03	43.84	26.09	64.51	50.76	9.32	48.37	38.2	9.59	74.36	65.1–74.36	290.68	2.30991
M04	24.2	23.5	33.34	16.42	14.42	36.97	45.37	100.38	0	50–70.66	294.6	2.30002
M05	41.39	24.49	36.9	22.73	11.61	8	11.26	76.66	17.79	60–17.79	250.38	2.39812
M06	19.08	27.52	57.09	29.83	7.73	40.75	17.49	29.82	0	45.56–14.85	229.31	2.32257
M07	22	27.04	37.16	20.76	2.02	14.36	32.73	87.42	0	50–39.34	243.49	2.36342
M08	21.65	26.49	47.64	30.75	3.72	28.1	34.62	10.86	33.72	50–33.72	237.55	2.35924
M09	12.04	11.82	26.57	20.39	19.1	26.1	0	53.87	65.59	74.95–65.59	235.48	2.19368
M10	12.78	10.33	10.53	5.99	0	2.57	0	12.69	236.5	79.5–100.04	291.39	2.36636
M11	22.12	10.03	11.24	13.22	2.14	3.52	10.46	28.35	222.53	68.9–104.28	323.61	2.39332
M12	20.35	13.6	18	2.98	1.61	9.56	13.28	19.8	159.74	85.8–108.68	258.92	2.42207
M13	7.19	6.59	9.28	9.68	1.52	6.92	2.98	52.64	182.67	98.9–182.67	279.47	2.12686
M14	17.68	18.71	30.5	22.55	2.46	38.22	36.11	18.13	71.01	63.28–23.28	255.37	2.28294
M15	23.1	14.42	8.75	2.2	0	4.28	6.94	38.61	218.9	67.20–150.58	317.22	2.45008
M16	18.69	22.2	26.05	15.91	0	0	13.35	26.23	141.01	62.1–82.38	263.44	2.40037
M17	24.27	17.69	18.33	4.8	3.2	6.39	15.3	23.35	164.71	73.8–38.75	278.04	2.52142
M18	18.51	10.16	7.98	0.93	2.49	7.29	0	0	260.74	91.50–111.61	308.1	2.45534
M19	23.01	13.44	12.16	9.92	5.81	8.43	18.82	33.66	155.61	81.1–83.48	280.86	2.40018
M20	29.05	24.77	15.24	8.24	0	1.22	33.42	36.57	152.4	53.98–66.73	300.91	2.46801

Due to space limitation, only 20 sets of data have been listed.