Influencing Factor Analysis of Interference Vibration Reduction of Millisecond Blasting

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	Influencing Factor Analysis of Interference Vibration Reduction of Millisecond Blasting
	Yan Yongfeng 2; Li Haibo 1; Zhang Qiuhua 2; Chen Shihai 3; Lv Yanxin 1; Qiao Weiguo 3; Liu Yaqun 1
刊名	DISASTER ADVANCES
	2012
卷号	5 期号:4 页码:494-501
关键词	Waveforms Interference for Vibration Reduction Millisecond Delay Intervals Millisecond Blasting Waveform Superposition Time-frequency Characteristic
ISSN号	0974-262X
英文摘要	This study focuses on the study of the correlations between characteristics of the superimposed signals and millisecond delay interval and the variations of detonating sequence and properties of the seed-signals in millisecond blasting. For this purpose, MATLAB programming was used to analyze the time-frequency characteristics of the various superimposed single-deck seed-signals under different millisecond delay intervals. ARR (Amplitude Reduction Ratio) and VVR (Vibration Velocity Ratio) have been adopted to analyze these correlations. The result shows that the time difference of the superimposed signal, reaching to a certain amplitude reduction ratio, is not a specific time point but many intermittent time sections. Meanwhile, the dominant frequency varies in a stepped saw tooth pattern within different millisecond delay intervals. Within a rational millisecond delay interval, the more similar the vibration characteristics of the two seed-signals are, the more evident the waveforms interference effect in vibration reduction is. For a given charge weight of explosive, the best optimal effectiveness for vibration reduction is got when the detonating of the segment with the small charge weight of explosive is conducted first. After gathering information from MATLAB programming, a blasting experimental study was carried out to test and verify the results. The measured data reflects that the research results agree well with the practical operating process of millisecond blasting.
WOS研究方向	Geology ; Meteorology & Atmospheric Sciences ; Water Resources
语种	英语
出版者	DISASTER ADVANCES
WOS记录号	WOS:000313100100080
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/3372]
专题	岩土力学所知识全产出_期刊论文国家重点实验室知识产出_期刊论文
作者单位	1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; 2.Shandong XinCheng Bldg Planning & Design Co Ltd 3.Shandong Univ Sci & Technol, Coll Civil Engn & Architecture ;
推荐引用方式 GB/T 7714	Yan Yongfeng,Li Haibo,Zhang Qiuhua,et al. Influencing Factor Analysis of Interference Vibration Reduction of Millisecond Blasting[J]. DISASTER ADVANCES,2012,5(4):494-501.
APA	Yan Yongfeng.,Li Haibo.,Zhang Qiuhua.,Chen Shihai.,Lv Yanxin.,...&Liu Yaqun.(2012).Influencing Factor Analysis of Interference Vibration Reduction of Millisecond Blasting.DISASTER ADVANCES,5(4),494-501.
MLA	Yan Yongfeng,et al."Influencing Factor Analysis of Interference Vibration Reduction of Millisecond Blasting".DISASTER ADVANCES 5.4(2012):494-501.