Investigation on Crack Coalescence Behaviors for Granite Containing Two Flaws Induced by Cyclic Freeze-Thaw and Uniaxial Deformation in Beizhan Iron Mining, Xinjing, China

Figure 10

Sketch of the crack coalescence pattern observed around the rock bridge segment in the granite samples: (a) Samples have an inclined flaw of 20° subjected to 0, 20, 50, and 100 F-T cycles. (b) Samples have an inclined flaw of 50°subjected to 0, 20, 50, and 100 F-T cycles. (c) Samples have an inclined flaw of 70°subjected to 0, 20, 50, and 100 F-T cycles. The thick green lines represent the flaws, and the thin red lines denote the cracks emanating from the flaws. The shear cracks and tensile cracks are marked with S and T, respectively, with the following subscript number denoting the order of cracking.

(a)

(b)

(c)