Rapid and Slow Unlocking-Induced Startup Mechanisms of Locked Segment-Dominated Landslides

Figure 4

Shear stress−strain and displacement−time relations corresponding to (a) rapid and (b) slow unlocking-induced startup mechanisms. Points C, D, and E denote the volume-expansion, peak-stress, and residual-strength points of the locked segments, respectively. Points M and N denote the onset and termination, respectively, of the resistance homogenization process (gray shaded area). Points P and T denote the startups of displacement acceleration and landslide, respectively. In (b), points Q and S denote the suspension and resumption of displacement acceleration, respectively.

(a)

(b)