Laboratory Investigation of Energy Propagation and Scattering Characteristics in Cylindrical Rock Specimens
Joint Authors
Li, Qingwen
Chen, Lu
Qiao, Lan
Yang, Jianming
Source
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-09-24
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
Deep mining involves complex geological environments.
Moreover, along with strong disturbance, rockbursts and other severe dynamic hazards can occur frequently.
Energy theory is widely regarded as the most appropriate method for understanding the mechanism of deep dynamic problems.
When modeling dynamic disasters, energy theory includes the energy storage, energy accumulation, and energy transfer.
To study the energy transfer characteristics in rock, a series of split-Hopkinson pressure bar (SHPB) impact tests were conducted with long granite specimens (400 mm in length and 50 mm in diameter) and modified incidence bars (having the same cross-sectional area but different shapes).
The test results indicate that the impact energy decays exponentially with an energy attenuation coefficient of −0.42.
For the scattering characteristics of energy in the rock, the scattering distance is found to be approximately three times the specimen diameter, which is very similar to Saint-Venant’s principle in elastic mechanics.
American Psychological Association (APA)
Chen, Lu& Qiao, Lan& Yang, Jianming& Li, Qingwen. 2018. Laboratory Investigation of Energy Propagation and Scattering Characteristics in Cylindrical Rock Specimens. Advances in Civil Engineering،Vol. 2018, no. 2018, pp.1-7.
https://search.emarefa.net/detail/BIM-1115543
Modern Language Association (MLA)
Chen, Lu…[et al.]. Laboratory Investigation of Energy Propagation and Scattering Characteristics in Cylindrical Rock Specimens. Advances in Civil Engineering No. 2018 (2018), pp.1-7.
https://search.emarefa.net/detail/BIM-1115543
American Medical Association (AMA)
Chen, Lu& Qiao, Lan& Yang, Jianming& Li, Qingwen. Laboratory Investigation of Energy Propagation and Scattering Characteristics in Cylindrical Rock Specimens. Advances in Civil Engineering. 2018. Vol. 2018, no. 2018, pp.1-7.
https://search.emarefa.net/detail/BIM-1115543
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1115543