Research on Plastic Zone Evolution Law of Surrounding Rock of Gob-Side Entry Retaining under Typical Roof Conditions in Deep Mine

Figure 1

Gob-side entry retaining types under typical roof conditions in deep mine. (a) Gob-side entry retaining with thin immediate roof, (b) gob-side entry retaining with thick immediate roof, (c) gob-side entry retaining with thick-hard roof, and (d) gob-side entry retaining with compound roof.

(a)

(b)

(c)

(d)