Stability Analysis and Support Design Methods for Rock Foundation Pit with Combination of Structural Plane and Karst Cave

Figure 15

Comparison of the theoretical calculations and actual measurements. (a) Excavation depth of 15 m, before installation of the first steel retail pile. (b) Excavation depth of 20 m. (c) Excavation depth of 25 m, before installation of the second steel retaining pile. (d) Excavation depth of 30 m.

(a)

(b)

(c)

(d)