Numerical analysis on the blasting parameters of top coal weakening
Abstract：In order to improve mining rate of top coal caving in hard thick coal seam,the blasting parameters of top coal weakening have been researched by FLAC3D numerical analysis in this paper,as the result,the three aspects laws about charge weight with degree of rock and coal damage,perturbation frequency of hole material and shear stress value have contained.The research conclusion will provide according for choosing top coal weakening blasting parameters in coal mine.
Keywords：Rock breaking efficiencyblasting parameterscoal miningnumerical analysis
Publication Date：2011-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 33-37 )