Dynamic Rock-Breaking Process of TBM Disc Cutters and Response Mechanism of Rock Mass Based on Discrete Element

Table 1

Macroscopic physical and mechanical parameters of rock materials.

Density (kg/m^3)	Elastic modulus (GPa)	Uniaxial tensile strength (MPa)	Tensile strength (MPa)	Poisson’s ratio
2420.0	24.0	93.5	10.9	0.24