Modeling Shock Wave Processes in a Mine Opening with Permeable Barriers
Autor: | B. V. Postinkov, V. A. Kolotilov, N. F. Florya, V. S. Shalaev, V. M. Fomin, Yu. V. Shalaev |
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Rok vydání: | 2019 |
Předmět: | |
Zdroj: | Journal of Mining Science. 55:18-22 |
ISSN: | 1573-8736 1062-7391 |
Popis: | The results of numerical modeling of intense shock wave propagation after explosion in a mine opening with permeable screen are presented. The problem is solved in the equilibrium non-viscous formulation without regard to chemical reactions and with averaged composition of mine air. It is shown that for a screen composed of four similar permeable barriers arranged as a labyrinth, the incoming shock wave has a strongest impact on the first barrier. As a consequence of weakening of the shock wave front on the first barrier, the rest barriers experience much less loading. In order to decrease peak loads on a load-bearing frame, it is necessary to reduce areas of flat front surfaces of metal structures. |
Databáze: | OpenAIRE |
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