Tunnel Back Analysis Based on Differential Evolution Using Stress and Displacement

Table 3

Summary of analysis cases.

Cases	Observation parameters	Thickness of segment lining	Radius of tunnel	Hydrostatic pressure
A-1	Displacement	—	3 m	10 MPa
A-2		—	5 m	10 MPa
A-3		—	5 m	20 MPa
B-1	Displacement	0.2 m	3 m	11 MPa
B-2		0.2 m	5 m	11 MPa
B-3		0.2 m	5 m	21 MPa
C-1	Displacement and stress	0.2 m	3 m	11 MPa
C-2		0.2 m	5 m	11 MPa
C-3		0.2 m	5 m	21 MPa