Research Article
The Criteria of Underground Rock Structure Failure and Its Implication on Rockburst in Roadway: A Numerical Method
Figure 3
Evolution laws of the plastic zone loading in the direction of maximum confining pressure. (a) Rmax = 2.6 m. (b) Rmax = 3.6 m. (c) Rmax = 6.8 m. (d) Rmax = 12.1 m. (e) Rmax = 21.5 m. (f) Rmax = 48.4 m.