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Numerical Simulation on Increase of Permeability Using Deep-hole Pre-splitting Explosion in Low Permeability Coal Seam

XU Chao-ji

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Abstract

Deep hole presplitting blasting stress wave produced by the superposition of two blast hole,accelerate the crack formation and communication speed,effectively promote the formation of the pressure relief zone.Taking Huainan Mining Group Xieyi coal mine 5121 working face as an example of deep hole pre splitting blasting test,numerical simulation is carried out using the ANSYS software,and analyzes the three stages in the process of blasting,for high gas and low permeability coal seam safe production provides a better solution.

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What this paper is about

Deep hole presplitting blasting stress wave produced by the superposition of two blast hole,accelerate the crack formation and communication speed,effectively promote the formation of the pressure relief zone.Taking Huainan Mining Group Xieyi coal mine 5121 working face as an example of deep hole pre splitting blasting test,numerical simulation is carried out using the ANSYS software,and analyzes the three stages in the process of blasting,for high gas and low permeability coal seam safe production provides a better solution.

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Available abstract

Deep hole presplitting blasting stress wave produced by the superposition of two blast hole,accelerate the crack formation and communication speed,effectively promote the formation of the pressure relief zone.Taking Huainan Mining Group Xieyi coal mine 5121 working face as an example of deep hole pre splitting blasting test,numerical simulation is carried out using the ANSYS software,and analyzes the three stages in the process of blasting,for high gas and low permeability coal seam safe production provides a better solution.

Key concepts: Coal mining, Rock blasting, Permeability (electromagnetism), Coal, Superposition principle, Deep hole, Computer simulation, Engineering

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Numerical Simulation on Increase of Permeability Using Deep-hole Pre-splitting Explosion in Low Permeability Coal Seam — Research Paper | ScholarLens