Influence of Arch Foot Defect of Primary Support on Mechanical Behaviors of an Arch Frame in Underground Tunnels

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static-preview.hindawi.com/articles/geofluids/volume-2022/9593566/figures/9593566.fig.0010a.svgz" name="9593566.fig.0010a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>Numerical model of excavation of surrounding rock on the upper bench of tunnel</td></tr><tr class="fig-image" id="b"><td><object data="https://static-preview.hindawi.com/articles/geofluids/volume-2022/9593566/figures/9593566.fig.0010b.svgz" name="9593566.fig.0010b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>Divisional excavation model diagram</td></tr></table>

<div>Tunnel bench excavation model.</div>

Geofluids

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Figure 10

Figure 10: Influence of Arch Foot Defect of Primary Support on Mechanical Behaviors of an Arch Frame in Underground Tunnels 