Construction Technique of Long-Span Shallow-Buried Tunnel Considering the Optimal Sequence of Pilot-Tunnel Excavation

<div>Vertical displacement nephogram of Method <a href="https://static.hindawi.com/articles/amse/volume-2015/491689/figures/#method2">2</a>.</div>

Advances in Materials Science and Engineering

Figure 2: Construction Technique of Long-Span Shallow-Buried Tunnel Considering the Optimal Sequence of Pilot-Tunnel Excavation 