A Case Study of Optimization and Application of Soft-Rock Roadway Support in Xiaokang Coal Mine, China

Figure 10

The deformation and failure characteristics of the U-shaped steel support. (a) At P1 observation station, 50 m; (b) at P2 observation station, 500 m; (c) at P3 observation station, 1000 m.

(a)

(b)

(c)