Experimental Study on Structural Form and Excavation Model of Urban Metro Cross Transfer Station with Super Large Cross Section and Shallow Excavation

<div>Excavation process of super-large section tunnel: (a) process of the double-side-wall heading excavation method; (b) process of the cross rock beam + heading method.</div>

Advances in Civil Engineering

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Figure 3: Experimental Study on Structural Form and Excavation Model of Urban Metro Cross Transfer Station with Super Large Cross Section and Shallow Excavation 

Figure 3 | Experimental Study on Structural Form and Excavation Model of Urban Metro Cross Transfer Station with Super Large Cross Section and Shallow Excavation 