Research Article

Stability Analysis of Surrounding Rock of Large Section Ultradeep Shaft Wall

Table 4

Radius of plastic zone of surrounding rock after shaft excavation.

Shaft depth (m)Radius of plastic zone (m)

−930 m ∼ −972 m1.29
−972 m ∼ −1050 m1.82
−1050 m ∼ −1073 m1.96
−1073 m ∼ −1102 m2.08
−1102 m ∼ −1153 m2.01
−1153 m ∼ −1207 m2.14
−1207 m ∼ −1250 m2.08
−1250 m ∼ −1271 m2.17