TY - JOUR
TI - Assessment of coal dynamic destruction intensity from the energy viewpoint
AU - Bai Yun
AU - Gao Feng
AU - Niu Yue
AU - Ma Bin-Wen
AU - Sun Wen-Bin
AU - Ren Kai-Feng
AU - Yang Zheng-Min
JN - Thermal Science
PY - 2025
VL - 29
IS - 2
SP - 1307
EP - 1312
PT - Article
AB - In order to effectively assess the intensity of coal destruction under impact  disturbance, the Split Hopkinson Pressure Bar tests at different impact  velocities were carried out. The coal destruction intensity was explored in  terms of both the degree of specimen fragmentation and the degree broken  pieces ejection. Quantitative criteria for comprehensively assessing and  predicting the coal destruction intensities were further proposed. Combined  with the test results and the change rule of destruction intensity energy  indexes, the degree of coal crushing can be divided into three grades:  light, medium and heavy, and the degree of coal ejection can be divided into  four grades: no ejection phenomenon, slight ejection, medium ejection and  violent ejection. The research results of this paper provide new ideas and  scientific guidance for the comprehensive evaluation of dynamic disasters  intensity.