Energy Action Mechanism of Coal and Gas Outburst Induced by Rockburst

Table 2

Fractal dimension of fragment after impacting outburst coal.

Serial number	Strain rate (s^−1)	b	Fractal dimension D	Correlation coefficient R
1	73	0.63	2.37	0.990
2	78	0.59	2.41	0.962
3	81	0.58	2.42	0.992
4	102	0.49	2.51	0.999
5	115	0.44	2.56	0.996
6	129	0.45	2.55	0.995
7	160	0.43	2.57	0.991
8	174	0.40	2.60	0.986
9	193	0.44	2.56	0.996
10	214	0.36	2.64	0.959
11	219	0.37	2.63	0.983
12	221	0.38	2.62	0.992
13	268	0.36	2.64	0.955
14	279	0.36	2.64	0.966