Experimental study on inner failuremechanisms of coal by blasting
Abstract：Explosive work in coal seam is a conventional technology in coal production.However,the interior interaction within coal seam for explosive work is not very clear.To expose the interior interaction mechanism,several experiments in laboratory are performed to model the interior interaction of coal explosion.The instant strain wave in the interior region of coal explosion is recorded with USB super dynamic strain recorder and is possessed by DasView-2 software package.For coal seams with different strength,the amplitude decaying feature of explosion stress wave is analyzed.The fracture feature and fracture distribution in coal seams around explosion position are observed and recorded through cut-section analysis of coal-seam after explosion action.
Keywords：coal seaminterior interaction mechanisminstant strain waveexplosion stress wave
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( 629-633 )