Research on the Correspondence between Throwing Blasting Equivalent and Earthquake Magnitude,as well as Waveform Characteristics——Taking the Heidaigou Open-pit Coal Mine as an Example
To further prevent and resolve the significant risks potentially caused by mine-induced seismic events,it is necessary to conduct research on the corresponding relationship between earthquake magnitude and blasting equivalent,and continuously improve the ability to predict and prevent mining earthquakes.In this paper,the orthogonal regression method is adopted.Based on the 69 blasting events recorded by the Inner Mongolia seismic network and 108 stations in neighboring provinces during 2017-2022,the empirical relationship between seismic magnitude and blasting equivalent is calculated as ML=0.706 31gY+0.688,so that the mag-nitude can be estimated by controlling the blasting equivalent.his approach helps avoid potential casualties and economic losses from production halts for safety inspections,supporting controlled blast vibration for safe,continuous mining operations and promoting social safety in production.Additionally,by comparing the waveform characteristics of natural and blast-induced seismic events at the Heidaigou open-pit coal mine,distinguishing criteria for natural earthquakes and blasts were summarized,providing a scientific reference for better identification of natural and blast events.
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