Seismic Response Analysis of Secondary Lining Polymer Grouting Debonding Repair for Tunnel Construction Based on Parameter Inversion

Figure 23

The maximum stress and minimum principal stress at the top of the secondary lining of the tunnel are determined by the action of seismic waves at different sites: (a) the maximum principal stress at the top of the secondary lining; (b) the minimum principal stress at the top of the secondary lining.

(a)

(b)