Settlement Prediction Method of Extra-Large Diameter Tunnels in Soft Rock Strata

Table 2

Project excavation conditions.

Working conditions	Tunnel excavation span (m)	Tunnel depth (m)
1	18	37.5
2	22	37.5
3	26	37.5
4	30	37.5
5	30	27.5
6	30	37.5
7	30	47.5
8	30	57.5