Stability Analysis of Neighborhood Tunnels with Large Section Constructed in Steeply Jointed Rock Mass

Table 2

Parameters of support system.

Material	Unit weight (kN/m^3)	Elastic modulus (GPa)	Poisson ratio	Strength (MPa)
				Compression	Tension
Shot concrete	24.8	29.5	0.2	25	1.78
Steel component	78.5	210	0.3	235	235
Rock anchor	77	210	0.3	235	235