Dynamic Rock-Breaking Process of TBM Disc Cutters and Response Mechanism of Rock Mass Based on Discrete Element

Figure 2

Failure characteristics of rock mass during rock breaking by disc cutter. (a) Intrusion 1.0 mm. (b) Intrusion 3.0 mm. (c) Intrusion 6.0 mm. (d) Intrusion 9.0 mm. (e) Intrusion 12.0 mm. (f) Intrusion 15.0 mm.

(a)

(b)

(c)

(d)

(e)

(f)