On Blasting Vibration Characteristics of an Open Pit Mine
To investigate the vibration characteristics induced by blasting on a high-steep slope within an open-pit mine,on-site blasting vibration tests are conducted,taking into account the rock properties and scale of the mine's blasting operations.Employing the TC4850 blasting vibration detection system and considering the terrain of the test area,testing points are strategically placed on steps of different heights,with relevant data collecting post-blasting.Utilizing MATLAB software programming,a regression analysis is performed to derive a fitting formula for the maximum vibration velocity of particles in the mining area.After accounting for the elevation effect,a more optimal fitting formula is obtained,yielding a correlation coefficient(r2)of 0.942.Within a defined range,the intensity of blasting vibration demonstrates a positive correlation with the relative elevation of the measuring point to the blast center.Additionally,the amplification effect is found to be associated with the relative elevation,particularly pronounced when the relative elevation is small,considering the elevation effect contributes to a more precise understanding of blasting vibration characteristics.
open pit minesregression analysisblasting vibrationelevation effect
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