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Published in: Bulletin of Engineering Geology and the Environment 1/2021

05-08-2020 | Original Paper

Scale model test study of influence of joints on blasting vibration attenuation

Authors: Chong Yu, Haozhen Yue, Haibo Li, Xiang Xia, Bo Liu

Published in: Bulletin of Engineering Geology and the Environment | Issue 1/2021

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Abstract

Ground vibrations are an integral part of the process of rock blasting. The analysis of blasting vibration attenuation is the basis for a blasting risk assessment. To study the influence of rock joints on the blasting vibration attenuation, an autoclaved aerated concrete block was used as a similar material of rock in model tests of blasting vibration propagation. The attenuation process of the blasting vibration was physically simulated. The attenuation behaviors of the blasting vibrations in different directions to joint strike were fitted. Additionally, a positive correlation between the attenuation parameters and the directions was obtained. Furthermore, the Hilbert–Huang transform (HHT) based on the complete ensemble empirical mode decomposition with adaptive noise (CEEMDAN) was used to analyze the vibration velocity signals. The characteristics and variation of the energy distribution were studied in the time–frequency domain. The results showed that the energy amplitude decreased as the propagation distance increased. The energy distribution gradually evolved from concentrated to discrete in the frequency domain. The low-frequency components were always present in the velocity signals at each measurement point, but the high-frequency components constantly changed due to the reflection and transmission of the waves after encountering the joint surfaces. The results of this study provide a reference for the prediction and control of the blasting vibration effect in jointed rock masses.

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Appendix
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Metadata
Title
Scale model test study of influence of joints on blasting vibration attenuation
Authors
Chong Yu
Haozhen Yue
Haibo Li
Xiang Xia
Bo Liu
Publication date
05-08-2020
Publisher
Springer Berlin Heidelberg
Published in
Bulletin of Engineering Geology and the Environment / Issue 1/2021
Print ISSN: 1435-9529
Electronic ISSN: 1435-9537
DOI
https://doi.org/10.1007/s10064-020-01944-2

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