A Study of Fractal Deep-Hole Blasting and Its Induced Stress Behavior of Hard Roof Strata in Bayangaole Coal Mine, China

Figure 8

“Triangular-fractal” blasting layout. (a) Top view of blasting layout. (b) Cross-sectional view of blasting layout. (c) 3D drilling position.

(a)

(b)

(c)