Numerical Shear Tests on the Scale Effect of Rock Joints under CNL and CND Conditions

Figure 13

Maximum principal stress for repeated and enlarged joints in shear tests under CNL condition. (a) Repeated joints sheared under normal stress of 10% UCS. (b) Repeated joints sheared under normal stress of 50% UCS. (c) Enlarged joints sheared under normal stress of 10% UCS. (d) Enlarged joints sheared under normal stress of 50% UCS.

(a)

(b)

(c)

(d)