Modeling Shock Wave Processes in a Mine Opening with Permeable Barriers
V. M. Fomin1,2, B. V. Postinkov1,2, V. A. Kolotilov1,2, V. S. Shalaev3, Yu. V. Shalaev3, N. F. Florya3
1Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch, Novosibirsk, 630090 Russia
2Novosibirsk State University, Novosibirsk, 630090 Russia
3Shaktpozharservis Research and Production, Kemerovo, 650000 Russia
Keywords: Ударная волна, горная выработка, взрыв, проницаемая преграда, Shock wave, mine opening, explosion, permeable barrier
Abstract
The results of numerical modeling of intense shock wave propagation after explosion in a mine opening with permeable barrier are presented. The problem is solved in the equilibrium inviscid 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 metal structure, it is necessary to reduce areas of their flat front surfaces.
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