Research Article
Deformation Characteristics of the Surrounding Rock of a Six-Lane Multiarch Tunnel under Different Excavation Conditions
Table 4
Excavation sequence of excavation scheme III.
| Section number | L1 | L2 | L3 | L4 | L5 | L6 | L7 | L8 | L9 | L10 | L11 | L12 |
| Left hole | L1-1 | L2-1 | L3-1 | L4-1 | L5-1 | L6-1 | L7-1 | L8-1 | L9-1 | L10-1 | L11-1 | L12-1 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | L1-2 | L2-2 | L3-2 | L4-2 | L5-2 | L6-2 | L7-2 | L8-2 | L9-2 | L10-2 | L11-2 | L12-2 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | Middle wall | L1-3 | L2-3 | L3-3 | L4-3 | L5-3 | L6-3 | L7-3 | L8-3 | L9-3 | L10-3 | L11-3 | L12-3 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | Right hole | L1-4 | L2-4 | L3-4 | L4-4 | L5-4 | L6-4 | L7-4 | L8-4 | L9-4 | L10-4 | L11-4 | L12-4 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | L1-5 | L2-5 | L3-5 | L4-5 | L5-5 | L6-5 | L7-5 | L8-5 | L9-5 | L10-5 | L11-5 | L12-5 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 |
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Note. Step 13 is the middle wall support, represents the template number, and number represents the excavation step. |