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Analysis of Blasting Vibration Signals at Different Initiation Positions of Tunnel Blastholes
In order to study the blasting vibration effect of different blasting points of the tunnel bore, the pilot tunnel in multi-arch tunnel was used to carry out the test of different blasting points of the bore. The results show that: 1) the peak velocity generated by blasting at different initiation points of the hole is different, and the magnitude of the peak velocity is reverse initiation > Intermediate initiation > Forward initiation; 2) The frequency distribution range of blasting vibration signal under the three initiation positions is: forward initiation > Reverse initiation > Intermediate initiation; At the same time, forward initiation is more conducive to the main frequency of blasting vibration signal moving to high frequency; 3) Compared with reverse initiation and intermediate initiation, forward initiation can better disperse energy, so that the energy is transferred from low frequency to high frequency, so that the blasting vibration is relatively small, which is more conducive to the safety of tunnel lining structure.
Analysis of Blasting Vibration Signals at Different Initiation Positions of Tunnel Blastholes
In order to study the blasting vibration effect of different blasting points of the tunnel bore, the pilot tunnel in multi-arch tunnel was used to carry out the test of different blasting points of the bore. The results show that: 1) the peak velocity generated by blasting at different initiation points of the hole is different, and the magnitude of the peak velocity is reverse initiation > Intermediate initiation > Forward initiation; 2) The frequency distribution range of blasting vibration signal under the three initiation positions is: forward initiation > Reverse initiation > Intermediate initiation; At the same time, forward initiation is more conducive to the main frequency of blasting vibration signal moving to high frequency; 3) Compared with reverse initiation and intermediate initiation, forward initiation can better disperse energy, so that the energy is transferred from low frequency to high frequency, so that the blasting vibration is relatively small, which is more conducive to the safety of tunnel lining structure.
Analysis of Blasting Vibration Signals at Different Initiation Positions of Tunnel Blastholes
Lecture Notes in Civil Engineering
Feng, Guangliang (editor) / Yan, Zhihao (author) / Wang, Genzhong (author) / Gao, Wenxue (author) / Zhou, Min (author) / Hu, Wangjing (author) / Ye, Jin (author) / Li, Yanping (author) / Xie, Yuelan (author) / Hu, Yu (author)
International Conference on Civil Engineering ; 2022 ; Nanchang, China
Proceedings of the 9th International Conference on Civil Engineering ; Chapter: 22 ; 265-273
2023-06-18
9 pages
Article/Chapter (Book)
Electronic Resource
English
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