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Study on the distribution and prediction of PGV in surrounding rock under different seismic source parameters

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  • Deep Mining Laboratory Subsidiary of Shandong Gold Mining Technology Co.,Ltd.|Shandong Jinzhou Mining Group Co.,Ltd.|Shandong Jinzhou Mining Group Co.,Ltd.|Deep Mining Laboratory Subsidiary of Shandong Gold Mining Technology Co.,Ltd.|Deep Mining Laboratory Subsidiary of Shandong Gold Mining Technology Co.,Ltd.
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Abstract:

In order to totally understand the law of seismic wave propagation and distribution in the surrounding rock under different seismic source mechanisms,the paper studies the distribution of PGV under different seismic source parameters based on field monitoring data.The results show that the distance between stations and the source,moment magnitude scale,and the rake of fault slip have different effects on the distribution of PGV.The applicability of each prediction methods is analyzed by comparing the fitting correlation coefficient between PGV calculated from empirical formulas and others from field monitoring.The study finds that the predicted value of PGV calculated from the Sadov’s prediction formula has a higher correlation to the measured result with blasting vibration event.Based on the above research results,the spatial distribution of PGV under dynamic seismic mechanisms is calculated before suggestions on the surrounding rock support under different conditions of the seismic source location and magnitude are given.

Keywords:

metal mine;seismic source;vibration monitoring;PGV;prediction formula;fitting correlation coefficient