Mechanism of Strain Burst by Laboratory and Numerical Analysis

Table 3

Microparameters of the calibrated PFC model in the UC test and excavation wall model in the strain burst test.

Ec,	48 GPa	Rmin	0.42 mm
kn/ks,	6.0	Rmax/Rmin	1.66
	110 ± 27.5 MPa		1.0
	110 ± 27.5 MPa	μ	0.5