Dynamical destabilization experimental analysis on deep-seated,steep and heavy thick coal seam in Huating Mine

摘要

The No. 5 Colliery of Huating Coal Mine has a deep-seated, steep and heavy thick coal seam.During mining, dynamical destabilizations happen frequently so as to induce tragedies. Based on comparison between acoustic emission (AE) experiment on dynamical destabilization of coal rock and related in-situ testing results, this paper conducts comprehensive analysis on regular quantificational AE patterns (energy rate, total event) corresponding to coal rock destabilization in complex-variable environment. The variable stress-environment parameters include dynamic tension energy rate, deformation resistance to compression,and shear stress.