Stability Analysis of Surrounding Rock in Circular Tunnels Based on Critical Support Pressure

<div>Influence of the maximum damage variable on the critical support pressure under different intermediate principal stress coefficients. (a) <i>p</i><sub><i>i</i>1</sub> and (b) <i>p</i><sub><i>i</i>2</sub>.</div>

Advances in Civil Engineering

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Figure 7

Figure 7: Stability Analysis of Surrounding Rock in Circular Tunnels Based on Critical Support Pressure 