Dynamic Behavior of Coal Pillar under Different Load Percentage by Numerical Simulation

Table 2

Relationship between mine tremor energy and peak dynamic load.

No.	Energy/J	Wave velocity/(m/s)	Density/(kg/m^3)	PPV/(m/s)	Peak dynamic load/MPa
1	10^3∼10^4	4500	2500	1.00	10
2	10^4∼10^5	4500	2500	2.90	30
3	10^5∼10^6	4500	2500	5.60	60
4	10^6∼10^7	4500	2500	9.40	100