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. 2025 Aug 22;15:30954. doi: 10.1038/s41598-025-11477-x

Table 4.

The stage construction simulation for the excavation-tunnel problem.

Simulation stages Description
0 Generation the initial stress
1 Simulation additional stress field caused by tunnel
2 Installation of the diaphragm wall
3, 5, 7, 9, 11 and 13 Excavation in front of the diaphragm wall at the levels of -3, -5, -8, -11, -14 and -17 m
4, 6, 8, 10, 12 and 14 Activation and pre-stress the first, second, third, fourth, fifth and sixth rows of ground anchors at the levels of -2, -4, -7, -10, -13 and -16 m