Limit Analysis of Collapse Mechanisms for Tunnel Roofs Subjected to Pore Water Pressure: A Numerical Approach

<div>Collapse mechanism of rock mass for tunnels in steady seepage field. (a) Schematic diagram of collapse mechanism. (b) Geometric condition of detaching surface.</div>

Advances in Civil Engineering

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Figure 2

Figure 2: Limit Analysis of Collapse Mechanisms for Tunnel Roofs Subjected to Pore Water Pressure: A Numerical Approach 