Research Article | OPEN ACCESS
Influence Mechanism of Lamella Joints on Tunnel Blasting Effect
Shiwei Shen, Lei Nie, Shulin Dai and Yan Xu
College of Construction Engineering, Jilin University, Changchun 130026, China
Research Journal of Applied Sciences, Engineering and Technology 2013 20:4905-4908
Received: September 27, 2012 | Accepted: December 11, 2012 | Published: May 15, 2013
Abstract
In this study, we have a research of the influence mechanism of lamella joints on tunnel blasting effect. During the process of the tunnel blasting construction, primary structural planes make an important role for the effect of smooth blasting. Especially, it is difficult to attain the perfect blasting effect when the lamella joints intersect with the designed contour line. Coupled effect of the explosive stress waves and the explosive gas is deemed to the basic theory, analysis the blasting effect in the condition of single closed joint and lamella joints intersect with the designed contour line and test it combined with the tunnel engineering. Research results show that back break will occur at the same time in the condition of single closed joint, on the other hand, hackly back break will occur in the condition of the lamella joints.
Keywords:
Blasting effect, hackly back break, lamella joints, mechanism, tunnel,
Competing interests
The authors have no competing interests.
Open Access Policy
This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Copyright
The authors have no competing interests.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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