Deformation Control of Subway Tunnels Undercrossing Airport Facilities: A Case Study of the Xinzheng Airport Rail Transit Hub Project

Table 4

Subway tunnel segment parameters.

Name	Elastic modulus (Pa)	Poisson’s ratio	Cohesion (kPa)	Internalfriction angle (°)
Soil	0.15 × 10^6	0.4	0.12 × 10^5	27
Grouting reinforcement ring	18 × 10^7	0.23	1.5 × 10^6	35
Lining layer	30 × 10^9	0.24	/
Runway	50 × 10^9	0.15