Effect of Subway Excavation with Different Support Pressures on Existing Utility Tunnel in Xi’an Loess

Figure 14

The vertical displacement curves of each monitoring longitudinal line in two cases at the selected moment. (a) Vertical displacement of LCB-1 when the left line is advanced to 30 rings. (b) Vertical displacement of LCB-1 when the left line is advanced to 30 rings. (c) Vertical displacement of MCB-2 when the left line is advanced to 30 rings. (d) Vertical displacement of MCB-2 when the left line is advanced to 30 rings. (e) Vertical displacement of RCB-3 when the left line is advanced to 30 rings. (f) Vertical displacement of RCB-3 when the left line is advanced to 30 rings.

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(b)

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(f)