Study on the Mechanical Response of a Dense Pipeline Adjacent to the Shallow Tunnel

Table 1

Physical and mechanical parameters of soil layer.

Designation	Density (kN/m^3)	Modulus of elasticity (MPa)	Poisson’s ratio	Cohesion (kPa)	Friction (°)
Miscellaneous fill	17.2	3.2	0.32	10	10
Plain fill	17.3	3.5	0.32	12	10
Powder quality clay	19.3	18	0.30	40.34	18.69
Medium sand	19.6	67	0.27	—	32