Numerical Analysis on the Behavior of Existing Tunnels Subjected to the Undercrossed Shield Tunneling at a Small Proximity

<div>The influence of soil elastic modulus on the crown settlement of existing tunnel. (a) The settlement curves of the existing tunnel. (b) The linear fitting of the maximum settlement value of the existing tunnel.</div>

Advances in Civil Engineering

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Figure 15

Figure 15: Numerical Analysis on the Behavior of Existing Tunnels Subjected to the Undercrossed Shield Tunneling at a Small Proximity 