Computer Modeling of Coal Seam Blasting
V. A. Trofimov, I. E. Shipovskii
Academician Melnikov Research Institute for Comprehensive Exploitation of Mineral Resources-IPKON, Russian Academy of Sciences, Moscow, 111020 Russia
Keywords: Blasting, dynamic impact, coal seam with high methane content, pre-fracture, computer modeling
Abstract
The authors discuss the mechanism of breaking coal by blasting with a view to optimizing this method of dynamic treatment of coal and improving drilling-and-basting performance. A combination model of high gassy coal is used to describe the connection between coal breaking by blasting and subsequent gas liberation. This model and the smoothed-particle hydrodynamics method are used to study evolution of damage zones and stress-strain behavior of coal in the neighborhood of a blasthole after explosion. The research findings help predict coal response to the dynamic impact.
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