A Study of the Anchorage Body Fracture Evolution and the Energy Dissipation Rule: Comparison between Tensioned Rock Bolts and Torqued Rock Bolts

Figure 4

Strength, fracture, and energy evolution of the anchorage body under uniaxial compression: (a) stress-strain curve (no rock bolt); (b) stress-strain curve (low pretensioned rock bolt); (c) stress-strain curve (high pretensioned rock bolt); (d) crack and damage curve (no rock bolt); (e) crack and damage curve (low pretensioned rock bolt); (f) crack and damage curve (high pretensioned rock bolt); (g) energy curve (no rock bolt); (h) energy curve (low pretensioned rock bolt); and (i) energy curve (high pretensioned rock bolt).