Short Cantilever Rock Beam Structure and Mechanism of Gob-Side Entry Retaining Roof in Reuse Period

Figure 9

Limit equilibrium criterion of short cantilever rock beam structure. (a) M = 1.5 m value, (b) m = 2.1 m value, (c) m = 2.5 m value, (d) m = 2.8 m value, and (e) m = 3.5 m value.

(a)

(b)

(c)

(d)

(e)