Determination on Standing Blasting Effective Scope of High Gassy and Low Permeability Seam
Abstract：The ANSYS/LS-DYNA software was applied to the computer numerical simulation on the standing blasting effective scope.The blasting numerical calculation models with the blasting borehole spacing of 5,6 and 7 m were individually established.The analysis on the simulation results showed that the blasting stress wave would be spread to all around based on the blasting source as the center.The stress wave strength would be steadily reduced with the spreading distance increased.During the stress wave spreading process,the stress superposition phenomenon would be occurred.The longer of the blasting borehole spacing,the lower of the attenuation range would be stress strength after the superposition during the spreading process.With the numerical simulation and the site inspection,when the blasting borehole spacing was 6 m,the blasting effect would be best.
Keywords：coal and gas outburststanding blastingstress wavespacing between blasting boreholesnumerical simulation
Publication Date：2011-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)