Research on the Algorithm for Composite Lining of Deep Buried Water Conveyance Tunnel

Table 3

Radial and circumferential stresses on the horizontal axis (MPa).

Stress direction	Inner lining		Outer lining
	Horizontal axis	Vertical axis	Horizontal axis	Vertical axis
Radial stress	−0.350	−0.350	−0.132	−0.126
Circumferential stress	1.220	1.300	1.130	1.180