A Shear Strength Model for a Subsidence Backfill Body Based on Adhesion Friction Theory

Figure 6

Relationship between shear strength and actual contact area: (a) vertical stress 100 kPa, (b) vertical stress 200 kPa, (c) vertical stress 300 kPa, and (d) vertical stress 400 kPa.

(a)

(b)

(c)

(d)