Numerical simulation of charge blasting without coupling to air media
DOI:
https://doi.org/10.54097/fcis.v1i1.1292Keywords:
Uncoupling coefficient, Uncoupled charge, Blasting, LS-DYNAAbstract
Blasting technology is one of the means commonly used in the excavation process of stone tunnels, in the blasting technology, it is mainly divided into glossy blasting and pre-cracking blasting. In the process of blasting, in order to prevent the excessive damage caused by explosive blasting, it is often used to blast by means of uncoupled charges. In this study, LS-DYNA was used to establish a three-dimensional model for numerical simulation of blasting, and the whole process of blasting of uncoupled charge was reproduced. By simulating the damage cloud map, the pressure on the pore wall and the vibration speed of the pore wall are analyzed and compared with the non-coupling coefficients k=1.5, 2, 2.5, and 3, which provides a theoretical basis for the calculation of the parameters of glossy blasting and pre-cracking blasting.
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References
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