Theoretical and Numerical Research on V-Cut Parameters and Auxiliary Cuthole Criterion in Tunnelling

Table 4

Material and state equation parameters of the explosive [28].

Density (kg/m^3)	Explosion velocity (m/s)	Detonation pressure (GPa)	A (GPa)	B (GPa)	R1	R2	ω	E0 (GPa)	V0
1300	4000	5.2	211.4	0.182	4.2	0.9	0.15	4.192E6	1.0

A, B, R₁, R₂, and ω are material parameters; R₁ and R₂ are nondimensional parameters; ω is the Grüneisen parameter on the change rate of pressure relative to internal energy under constant volume; E₀ is the initial internal energy of a unit volume explosive; V₀ is the relative volume.