Fig. 2

Shear stress along the discontinuity after tunnel excavation for \(H = 500\) m, \(K_0 = 1\), \(\alpha = 13.5^\circ\), \(\frac{d}{R} = 1\).

Shear stress along the discontinuity after tunnel excavation for \(H = 500\) m, \(K_0 = 1\), \(\alpha = 13.5^\circ\), \(\frac{d}{R} = 1\).