Research Article
The Criteria of Underground Rock Structure Failure and Its Implication on Rockburst in Roadway: A Numerical Method
Figure 5
Evolution laws of plastic zone unloading in the direction of minimum confining pressure. (a) Rmax = 2.6 m. (b) Rmax = 2.74 m. (c) Rmax = 3 m. (d) Rmax = 7.1 m. (e) Rmax = 12.9 m. (f) Rmax = 30.7 m.