Presplitting Blasting the Roof Strata to Control Large Deformation in the Deep Mine Roadway

Figure 10

Working resistance of the single prop in front of the working face. (a) Monitoring curves of the single prop 50 m ahead of working face. (b) Monitoring curves of the single prop 100 m ahead of working face. (c) Monitoring curves of the single prop 150 m ahead of working face.

(a)

(b)

(c)