Analysis of Mining Explosion Equivalent Estimation Methods——A Case of Heidaigou Open-pit Coal Mine in Inner Mongolia
The explosion equivalent is a critical parameter for quantifying the energy released by an explosion,and its accurate and rapid estimation is essential for effective emergency response and rescue operations.With advances in observation technology and the rapid development of seismological methods,seismological approaches have become a key means for estimating explosion equivalents.This study investigates methods for estimating the explosion equivalent in mining areas by analyzing explosion data from the Heidaigou open-pit coal mine in Inner Mongolia and incorporating findings from previous research.Two approaches are explored:the explosion seismic efficiency method and the magnitude-equivalent empirical relationship.The results indicate that seismic wave energy generated by explosions can be derived from recorded seismic waveforms.Using the calculated seismic wave energy and explosion seismic efficiency,the explosion equivalent can be accurately estimated.The seismic conversion efficiency of mining explosions determined in this study ranges from approximately 0.02％to 0.07％.Additionally,an empirical relationship between the local magnitude(ML)and explosion equivalent,specific to mining explosion events,is established.This relationship provides an alternative method for estimating the explosion equivalent.
Mining explosionEquivalent estimationExplosion seismic efficiencyLocal magnitude ML
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