Research on the Deformation and Control Technology of Surrounding Rock in Entry Retaining along the Gob Side

Figure 17

The distribution of the surrounding rock (2.3–2.8 m) outside the anchor zone. (a) 2.3 m. (b) 2.5 m. (c) 2.7 m. (d) 2.8 m.

(a)

(b)

(c)

(d)