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

Figure 4

Shear stress-shear displacement curves of backfill body samples (−20 mm): (a) waste rock content of 10%, (b) waste rock content of 20%, (c) waste rock content of 30%, and (d) waste rock content of 40%.

(a)

(b)

(c)

(d)