Research Article
Research on the Hard-Rock Breaking Mechanism of Hydraulic Drilling Impact Tunneling
Figure 22
The 3rd principal stress peak-curves of nodes around drilling hole in models A, D, and E.
(a) Node 14 |
(b) Node 15 |
(c) Node 16 |
(d) Node 17 |
(e) Node 18 |
(f) Node 19 |