Research Article
Stability of a Rock Tunnel Passing through Talus-Like Formations: A Case Study in Southwestern China
Figure 4
Engineering problems in Tayi tunnel: (a) large deformation of the primary lining due to soft surrounding rock mass; (b) collapse of the tunnel excavation face; (c) collapse of the tunnel side wall after installing steel arches but before spraying shotcrete of the primary lining; (d) broken primary lining after spraying shotcrete.
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