Characteristics of blasting vibration in presence of weak interlayers

CORC > 力学研究所 > 中国科学院力学研究所 > 力学所知识产出(1956-2008)

	Characteristics of blasting vibration in presence of weak interlayers
	Ding H(丁桦); Shang XJ; Bai JZ
	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
通讯作者	Ding, H (reprint author), Chinese Acad Sci, Inst Mech, 15 N W Rd 4th Round, Beijing 100080, Peoples R China.
中文摘要	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.
收录类别	CPCI-S
会议录	Computational Mechanics, Proceedings
会议录出版者	TSINGHUA UNIVERSITY PRESS
会议录出版地	BEIJING ; TSINGHUA UNIVERSITY HAIDIANQU, BEIJING 100084, PEOPLES R CHINA
语种	英语
ISBN号	7-302-09343-1
WOS记录号	WOS:000231353600037
内容类型	会议论文
源URL	[http://dspace.imech.ac.cn/handle/311007/58910]
专题	力学研究所_力学所知识产出(1956-2008)
推荐引用方式 GB/T 7714	Ding H,Shang XJ,Bai JZ. Characteristics of blasting vibration in presence of weak interlayers[C]. 见:6th World Congress on Computational Mechanics held in conjunction with the 2nd Asian-Pacific Congress on Computational Mechanics. Beijing, PEOPLES R CHINA. SEP 05-10, 2004.