Shear Slip Instability Behavior of Rock Fractures under Prepeak Tiered Cyclic Shear Loading

Figure 4

Shear sample preparation for interblock and intrablock sample. (a) Rock sample with fracture vertical suspension in the lower shear ring using clamping tools. (b) Pouring grout into the shear ring, and the fracture surface is higher than the end surface of the shear ring. (c) Completion of grout consolidation and removal of clamping tools. (d) 0.5 cm thick layer of rubber mud is formed onto grout surface. (e) Placing the upper shear ring and aligning and fixing the upper and lower shear rings. (f) Pouring grout into the upper shear ring, waiting for solidification. (g) Placing the shear ring in the lower shear box. (h) Covering the upper shear box for a shear test.

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