Research Article
A Study of Fractal Deep-Hole Blasting and Its Induced Stress Behavior of Hard Roof Strata in Bayangaole Coal Mine, China
Figure 13
Mises stress nephogram of roof section in the next 0.15 ms after blasting. (a) “Straight-line” blasting layout. (b) “Triangle-fractal” blasting layout. (c) “Deep-shallow-fractal” blasting layout.
(a) |
(b) |
(c) |