Application of Improved Single-Hole Superposition Theory in Nonequal Cross-Section Tunnel Intersection

Table 1

Mechanical parameters of rock mass.

	Elastic modulus (MPa)	Poisson’s ratio	Bulk density (kN/m^3)	Cohesion (kN/m^2)	Friction angle (°)
Red clay	18.1	0.33	17.1	30	10
Strongly weathered dolomite	1000.0	0.18	27.0	100	25
Moderately weathered dolomite	2500.0	0.15	27.5	300	30
Spray mixing	28000.0	0.20	25.0	/	/