Numerical simulation for the matching effect of rock parameters on explosives and rocks

China's mine blasting technology is gradually mature, but there are deficiencies in low blasting efficiency. The reasonable matching of explosives and rocks can effectively improve the blasting efficiency and is of great significance for mine blasting. Based on ANSYA/LS-DYNA, the matching effec...

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Bibliographic Details
Published in:IOP conference series. Earth and environmental science 2019-09, Vol.304 (5), p.52110
Main Authors: Li, Tingting, Niu, Xuefeng, Fei, Aiping, Zhu, Chunyu, Wang, Mingchang
Format: Article
Language:English
Subjects:
Blasting
Blasting (explosive)
Compressive strength
Density
Explosive compacting
Explosives
Matching
Mathematical models
Mechanical properties
Modulus of elasticity
Physical factors
Poisson's ratio
Rocks
Shear modulus
Shock waves
Simulation
Technology
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Summary:China's mine blasting technology is gradually mature, but there are deficiencies in low blasting efficiency. The reasonable matching of explosives and rocks can effectively improve the blasting efficiency and is of great significance for mine blasting. Based on ANSYA/LS-DYNA, the matching effects of rock physical density, elastic modulus, Poisson's ratio, compressive strength and shear modulus in double-hole blasting were studied and verified by simulation. By comparing the length of time that the shock wave caused the rock to be crushed, the experiment shows that the longer the blasting time, the better the matching effect. Numerical simulations show that the five physical factors affecting the matching effect of explosives and rocks are: compressive strength, Poisson's ratio, density, shear modulus, and elastic modulus. It has been verified that the experimental results can provide reference for the development of blasting technology.
ISSN:1755-1307
1755-1315
DOI:10.1088/1755-1315/304/5/052110