Numerical Study on the Impact Instability Characteristics Induced by Mine Earthquake and the Support Scheme of Roadway

Table 1

Mine earthquake energy statistics in the 1305 working face.

Energy classification (J)	Frequency	Percent (%)
10^2∼10^3	389	80.37
10^3∼10^4	76	15.7
10^4∼10^5	18	3.72
>10^5	1	0.21