Effects of High-Pretension Support System on Soft Rock Large Deformation of Perpendicularly Crossing Tunnels

Table 1

Parameters for the rock.

	Block properties					Contact properties
Density (kg/m^3)	K (GPa)	G (GPa)	C^b (MPa)	φ^b	σ^bt (MPa)	K^n (GPa	k^s (GPa)	C^j (MPa)	φ^j	σ^jt (MPa)
2420	12.3	8.1	13.6	32	2.30	87.31	33.11	1.55	31	1.34