Excavation Sequence and Surrounding Rock Mass Stability of Large-Scale Underground Engineering with 8 Tunnels

Figure 6

Measuring displacement curves of tunnels #1 and #2 under different IESs: (a) top point on tunnel #1, (b) sidewall point on tunnel #1, (c) top point on tunnel #2, and (d) sidewall point on tunnel #2.

(a)

(b)

(c)

(d)