Performance of Super-Large-Span Tunnel Portal Excavated by Upper Bench CD Method Based on Field Monitoring and Numerical Modeling

<div>Simulated results of tunnel portal section. (a) Crown settlement. (b) Horizontal convergence.</div>

Advances in Civil Engineering

Figure 6: Performance of Super-Large-Span Tunnel Portal Excavated by Upper Bench CD Method Based on Field Monitoring and Numerical Modeling 