Fractal Analysis of Failure Process and Damage Evolution of Jointed Sandstone Based on DIP Technique

Table 3

Calculation results of AE energy and fractal dimension of specimens under different stress levels.

Stress level
Numerical sample		10%	20%	30%	40%	50%	60%	70%	80%	90%	100%
	AE	0	1	18	22	33	65	73	78	82	102
	Ds	0.92	0.88	1.05	1.10	1.20	1.26	1.29	1.36	1.37	1.41
	AE	0	7	28	42	63	71	86	91	98	116
	Ds	0.84	0.88	1.02	1.09	1.19	1.27	1.31	1.35	1.39	1.47
	AE	0	18	19	24	38	55	67	88	92	106
	Ds	0.83	0.90	1.04	1.12	1.18	1.24	1.28	1.34	1.39	1.45
	AE	0	7	18	34	49	66	71	80	95	102
	Ds	0.83	0.86	0.92	0.96	1.06	1.153	1.27	1.35	1.42	1.48
	AE	0	5	9	11	14	30	32	72	96	149
	Ds	0	0.54	0.95	1.14	1.24	1.31	1.40	1.64	1.76	1.70
	AE	0	5	7	12	16	33	51	92	112	177
	Ds	0.85	0.82	0.86	0.93	1.05	1.20	1.34	1.41	1.50	1.59
	AE	0	2	5	10	24	44	58	114	154	193
	Ds	0.87	0.84	0.89	0.99	1.13	1.27	1.40	1.50	1.60	1.86