Comparative Experimental Study Of Blasting Vibration Signal With Different Single Section Dosage In Metro Tunnel Based On HHT Method
- 10.2991/icadme-15.2015.252How to use a DOI?
- subway tunnel, blasting excavation, HHT, single section dosage, main frequency, frequency band energy
In this paper the measured blast vibration signal of tunnel between Huaxin station and Huangmugang station of Shenzhen subway line 7 was analyzed, with blasting excavation way of benching tunneling construction method using different maximum charge of explosives. The peak vibration velocity and main frequency after explosion using different single section dose was comparative analyzed. The results demonstrate that: section dose increasing from 2.4kg to 3.6kg makes blasting vibration velocity bigger and main frequency lower. Meanwhile, the change of energy distribution curve at different frequency after blasting with two section dose based on HHT analyze methods was comparative analyzed. The research indicates that: the input energy through blasting vibration at low frequency (0-20Hz) becomes significantly larger, however the input energy ratio at middle and high frequency sharply decreased as section dose increased. In real construction, improving cyclical footage by increasing section dose should be used careful. A new way to control blasting vibration was proposed through the research.
- © 2015, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Xiangsheng Chen AU - Dehua Hu AU - Di Zhang AU - Sijia Wang PY - 2015/10 DA - 2015/10 TI - Comparative Experimental Study Of Blasting Vibration Signal With Different Single Section Dosage In Metro Tunnel Based On HHT Method BT - Proceedings of the 5th International Conference on Advanced Design and Manufacturing Engineering PB - Atlantis Press SP - 1365 EP - 1370 SN - 2352-5401 UR - https://doi.org/10.2991/icadme-15.2015.252 DO - 10.2991/icadme-15.2015.252 ID - Chen2015/10 ER -