Numerical Analyses on Deformation and Failure Characteristics of Surrounding Rock of Gob-Side Entry Retention by Roof Cutting

Figure 3

Technological process of this new method with roadside cutting: (a) cut out the roadway space; (b) support with the NPR cables; (c) the drilling process of the roof cutting drill; (d) the roof cutting supports were used as the temporary supports; (e) polymer sealing material was sprayed to close the gob promptly; (f) extralarge section roadway can be retained for the auxiliary transporting.

(a)

(b)

(c)

(d)

(e)

(f)