Blast vibration prediction
نویسندگان
چکیده
Predicting the peak ground velocity (PGV) of vibrations is essential to blast mining operations in order design charge weights so as not exceed certain thresholds that prevent damage buildings and other infrastructure. The problem usually marred by a large scatter observed PGV due unknown complexities seismic wave propagation. Classic prediction methods employ empirical formulas, most widespread being Scaled Distance approach has least parameters calibrate works for single sensor. In this study, we used data from 55 production blasts recorded an array 81 sensors open pit iron ore mine Austria. We evaluated compared different predicting PGV. set provides sufficient constraint independently resolve weight exponent c, radial decay constant b, local site factors. c/b-ratio 0.2 find our far smaller than implied US Bureau Mining method, predictions made with latter are significantly worse. This highlights importance using site-specific predictive models suggests relying on arbitrary priors may lead inaccurate predictions. For value 0.5 which interpret expression physical relationship between weight, energy, amplitude, suggesting be global, site-independent, value. result probable broader relevance beyond specific location could improve outcomes sites. article protected copyright. All rights reserved
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Blast vibration modeling using linear superposition method
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ژورنال
عنوان ژورنال: Geophysical Prospecting
سال: 2023
ISSN: ['1365-2478', '0016-8025']
DOI: https://doi.org/10.1111/1365-2478.13361