Rock Crushing Analysis of TBM Disc Cutter Assisted by Ultra-High-Frequency Loading

Figure 8

Distribution of the discrete fracture network with time: (a) DFN-type distribution under a single disc cutter, (b) DFN-type distribution assisted by ultrasonic vibration, blue lines represent tensile cracks caused by compression and red lines by tension, (c) DFN changes with time under a single disc cutter, and (d) DFN changes with time assisted by ultrasonic vibration.