Mechanism of Strain Burst by Laboratory and Numerical Analysis

Table 4

Parameters in the PFC model for the roof and floor in the strain burst.

Ec,	Varies from 0.27 to 5000 GPa	Rmin	0.42 mm
kn/ks,	6.0	Rmax/Rmin	1.66
	1000000 ± 0 MPa		1.0
	1000000 ± 0 MPa	μ	0.5

Note. E_c, (GPa) of the roof and floor are set as 0.27, 0.3, 0.5, 1, 2, 3, 5, 5.5, 6, 10, 20, 30, 40, 50, 70, 100, 200, 300, 400, 450, 490, 500, 1000, and 5000 in this series of studies.