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Effect of the Location of the Detonation Initiation Point for Bench Blasting
Joint Authors
Liu, Liang
Chen, Ming
Lu, Wenbo
Hu, Yingguo
Leng, Zhendong
Source
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-06-04
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
Uneven floor and fragmentation play an important role in blasting operations due to the direct effects on the efficiency of hauling and loading.
This paper focuses on the influences of initiation position on bench blasting in order to improve blasting effects.
The numerical simulations of bench blasting at different initiation points (top, middle, and bottom) are implemented based on secondary development of LS-DYNA with a tensile-compressive damage model.
The damage spatial distribution characteristics of different initiation points are compared.
The outlines of rock foundation and boulder areas are analyzed with the damage threshold of critical breakage that is ascertained by acoustic characteristic of damage rock mass.
Results of the numerical simulations demonstrate that different initiation points make a great influence on the stress and energy distribution in blasting process and induce different blasting effects.
Middle initiation turns out to be the best initiation to increase the flatness of the floor and decrease the oversize boulder ratio simultaneously, which will increase the damage areas of the bottom and top regions and give a better blasting effect.
Field experiment in Baihetan Station was carried out to validate conclusions of numerical simulation.
Research could provide a good reference for the improvement of rock blasting.
American Psychological Association (APA)
Liu, Liang& Chen, Ming& Lu, Wenbo& Hu, Yingguo& Leng, Zhendong. 2015. Effect of the Location of the Detonation Initiation Point for Bench Blasting. Shock and Vibration،Vol. 2015, no. 2015, pp.1-11.
https://search.emarefa.net/detail/BIM-1078388
Modern Language Association (MLA)
Liu, Liang…[et al.]. Effect of the Location of the Detonation Initiation Point for Bench Blasting. Shock and Vibration No. 2015 (2015), pp.1-11.
https://search.emarefa.net/detail/BIM-1078388
American Medical Association (AMA)
Liu, Liang& Chen, Ming& Lu, Wenbo& Hu, Yingguo& Leng, Zhendong. Effect of the Location of the Detonation Initiation Point for Bench Blasting. Shock and Vibration. 2015. Vol. 2015, no. 2015, pp.1-11.
https://search.emarefa.net/detail/BIM-1078388
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1078388