Correlation of preliminary and explosion-induced cracking with the comminution characteristics of brittle rock
A scheme is proposed for reducing the global grain size composition of fragments in the sequential explosion of a series of charges in a real rock mass to the preliminary fracturing and the local fracturing induced by each individual charge in the given cracked rock; within the framework of the approach here developed (relating the fragment formation and the fracturing), definitions are given for the concept of a comminution zone in an isotropic monolith and its mean radius and also for the explosive comminution zone in rock with isotropic fracturing and its mean radius. It is shown how the correlation between fragment formation and fracturing explains the existence of the comminution discontinuity in a real rock mass.
- Research Organization:
- VNIPIIstromsyr'e, Moscow, USSR
- OSTI ID:
- 5822629
- Journal Information:
- Sov. Min. Sci. (Engl. Transl.); (United States), Journal Name: Sov. Min. Sci. (Engl. Transl.); (United States) Vol. 22:5; ISSN SMNSA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
012031* -- Coal
Lignite
& Peat-- Underground Mining-- Strata Mechanics & Control-- (1987-)
BLAST EFFECTS
CARBONACEOUS MATERIALS
COAL
COAL DEPOSITS
COAL SEAMS
COMMINUTION
CORRELATIONS
CRYSTAL STRUCTURE
ENERGY SOURCES
ENGINEERING
ENGINEERING GEOLOGY
EXPLOSIONS
EXPLOSIVE FRACTURING
FOSSIL FUELS
FRACTURE MECHANICS
FRACTURE PROPERTIES
FRACTURING
FUELS
GEOLOGIC DEPOSITS
GEOLOGY
GRAIN SIZE
MATERIALS
MATHEMATICAL MODELS
MECHANICAL PROPERTIES
MECHANICS
MICROSTRUCTURE
MINERAL RESOURCES
MINING
MINING ENGINEERING
RESOURCES
ROCK MECHANICS
SIZE
STRATA CONTROL
UNDERGROUND EXPLOSIONS
UNDERGROUND MINING