Analysis of Overburden Structure and Pressure-Relief Effect of Hard Roof Blasting and Cutting

Figure 10

Stress distribution of surrounding rock before and after the THAS formation. (a) Cutting angle 10° and position 11 m, (b) cutting angle 10° and position 13 m, (c) cutting angle 15° and position 3 m, and (d) cutting angle 15° and position 5 m.

(a)

(b)

(c)

(d)