Safety Monitoring Index of High Concrete Gravity Dam Based on Failure Mechanism of Instability

Figure 4

The progressive failure process of dam-foundation system under strength reduction.

(a) 𝐾_𝑠=1.2

(b) 𝐾_𝑠=1.8

(c) 𝐾_𝑠=2.0

(d) 𝐾_𝑠=2.2

(e) 𝐾_𝑠=2.8

(f) 𝐾_𝑠=3.0