IMECH-IR  > 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; Ding, H (reprint author), Chinese Acad Sci, Inst Mech, 15 N W Rd 4th Round, Beijing 100080, Peoples R China.
Source PublicationComputational Mechanics, Proceedings
2004
Conference Name6th World Congress on Computational Mechanics held in conjunction with the 2nd Asian-Pacific Congress on Computational Mechanics
Conference DateSEP 05-10, 2004
Conference PlaceBeijing, PEOPLES R CHINA
AbstractA 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 IDWOS:000231353600037
ISBN7-302-09343-1
Indexed ByCPCI-S
Language英语
Citation statistics
Document Type会议论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/58910
Collection力学所知识产出(1956-2008)
Corresponding AuthorDing, H (reprint author), Chinese Acad Sci, Inst Mech, 15 N W Rd 4th Round, Beijing 100080, Peoples R China.
Recommended Citation
GB/T 7714
Ding H,Shang XJ,Bai JZ,et al. Characteristics of blasting vibration in presence of weak interlayers[C]. BEIJING, TSINGHUA UNIVERSITY HAIDIANQU, BEIJING 100084, PEOPLES R CHINA:TSINGHUA UNIVERSITY PRESS,2004.
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