Research Article
Limit Analysis of Collapse Mechanisms for Tunnel Roofs Subjected to Pore Water Pressure: A Numerical Approach
Figure 8
Effect of saturated unit weight of rock masses γsat on collapse mechanisms. The parameters are A = 0.35, B = 5/6, σc = 3.1 × 104 kPa, σt = σc/100 = 310 kPa, − ht = 16.68 m, r = 3.75 m, and C = 50 m.