Figure 13

Tensile strain of exterior wall 2 at different stages. (a) Shield cutter head reaching the building. (b) Shield tunnel reaching the middle position of the building. (c) Shield tunnel far from the building.
Tensile strain of exterior wall 2 at different stages. (a) Shield cutter head reaching the building. (b) Shield tunnel reaching the middle position of the building. (c) Shield tunnel far from the building.