Experimental Investigation of Blast-Induced Fractures in Rock Cylinders

• Published in: Rock mechanics and rock engineering Vol. 52; no. 8; pp. 2569 - 2584
• Main Authors: Chi, Li Yuan, Zhang, Zong-Xian, Aalberg, Arne, Li, Charlie C.
• Format: Journal Article
• Language: English
• Published: Vienna Springer Vienna 01.08.2019; Springer Nature B.V
• Subjects: Blasting; Blasting (explosive); Boreholes; Boundary conditions; Cement; Civil Engineering; Concrete; Confining; Crushing; Cylinders; Decoupling; Earth and Environmental Science; Earth Sciences; Explosions; Fracture mechanics; Fractures; Fragmentation; Geophysics/Geodesy; Granite; Gravel; Grout; Original Paper; Rocks; Steel; Steel tubes; Stone; Confined blasting; Borehole expansion; Rock fracture; Crushed zone; Surface movement

Fractures in rock cylinders with a central blasthole have been investigated, focusing on the borehole expansion, the crushed zone around the borehole, and the effects of the boundary conditions. Nine small-scale blasting tests were carried out on granite cylinders with diameters of either 228 or 240...