Application of Constant Resistance and Large Deformation Anchor Cable in Soft Rock Highway Tunnel

Table 2

Parameters for the rock mass.

Lithology	Block properties						Structural plane properties
	Density (kg/m^3)	K (GPa)	G (GPa)	C^b (MPa)	φ^b	(MPa)	K^n (GPa)	k^s (GPa)	C^j (MPa)	φ^j	(MPa)
Natural state carbonaceous slate	2500	0.44	0.25	1.7	22	0.6	30.21	12.08	3.75	29	3.45