Characteristics of blasting vibration in presence of weak interlayers

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	Characteristics of blasting vibration in presence of weak interlayers
	Ding H(丁桦); Shang XJ; Bai JZ; Ding, H (reprint author), Chinese Acad Sci, Inst Mech, 15 N W Rd 4th Round, Beijing 100080, Peoples R China.
会议录名称	Computational Mechanics, Proceedings
	2004
会议名称	6th World Congress on Computational Mechanics held in conjunction with the 2nd Asian-Pacific Congress on Computational Mechanics
会议日期	SEP 05-10, 2004
会议地点	Beijing, PEOPLES R CHINA
摘要	A numerical model is proposed in this paper to consider the effect of thin weak layers within semi-infinite homogeneous elastic media when explosives are at different locations. Using this model, we have studied the different features of blasting vibrations generated by explosives placed at different locations and for different dimensions (different areas) of weak layers through LS_DYNA. The numerical results reveal that the longer the layer length is, the larger vibration amplitude is and the less the characteristic frequencies of vibration signals are. The amplitude of vibration signals has a maximum value when blasting source is in the weak layer, and will decrease when the blasting source go away from the weak layer. There is a significant shading effect when the dimension of weak layer is large and the relative stiffness of the weak layer compared to surrounding medium is low. These findings are helpful to identify underground weak interlayer. In-situ experiments also confirm above findings qualitatively.
WOS记录号	WOS:000231353600037
ISBN号	7-302-09343-1
收录类别	CPCI-S
语种	英语
引用统计
文献类型	会议论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/58910
专题	力学所知识产出(1956-2008)
通讯作者	Ding, H (reprint author), Chinese Acad Sci, Inst Mech, 15 N W Rd 4th Round, Beijing 100080, Peoples R China.
推荐引用方式 GB/T 7714	Ding H,Shang XJ,Bai JZ,et al. Characteristics of blasting vibration in presence of weak interlayers[C]Computational Mechanics, Proceedings,2004.

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