Experimental Study on 3D Roughness and Shear Failure Mechanism of Rock Mass Discontinuity

Figure 20

Relationship between peak shear strengths and shear directions for the subsamples of natural rough rock joint surfaces. (a) A1 and A2; (b) A3 and A4; (c) A5 and A6; (d) A7 and A8.

(a)

(b)

(c)

(d)