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BLASTING PATTERN DESIGN WITH A NEW DEVELOPED SOFTWARE FOR BAJGIRAN TUNNEL, IRAN

M. Jamshidi, M. Ataei, H. M. NASIR Abad

First published: 2008DOI pendingView metrics

Abstract

Blast pattern design has direct influence on the time consumption and construction cost of drilling and blasting of tunnels. Tunnel blasting is more complicated operation than open pit blasting because the only free surface that initial breakage can take place toward is the tunnel face. The most important operation in the tunnel blasting procedure is to create an opening in the face with the intention of develop another free surface in the rock. This is the function of the cut holes. The cuts can be classified in two groups: parallel hole and angle hole cuts. Two tunnel blasting design methods (Nitro Nobel and Energy transfer from explosive to rock) are based on these cut holes. The calculations of the required parameters in these methods are really time consuming and doing these computations manually may includes some mistakes. To reduce the time consumption and doing the calculations with more confidence, a computer software was produced. In this paper, we attempted to design blasting pattern of Bajgiran tunnel in Iran by using this software. Obtaining true results with a rapid procedure showed that the use of computer aided devices can lead to better and more accurate answers.

Publication details

Title
BLASTING PATTERN DESIGN WITH A NEW DEVELOPED SOFTWARE FOR BAJGIRAN TUNNEL, IRAN
Authors
M. Jamshidi, M. Ataei, H. M. NASIR Abad
Proceedings
8th International Scientific Conference - SGEM2008
Publisher
SGEM Scientific GeoConference
Year
2008
Pages
385-396
SWS Citekey
Jamshidi2008385396
ISSN
1314-2704
ISBN
954-918181-2
Language
en
Publication type
Conference Paper
Keywords
Angle hole cutBlasting patternNitro NobelParallel hole cutTunneling
References10

  1. Alidadi, M., 2006. Blasting pattern design of Bajgiran tunnel, B.Sc thesis.(in Persian)

  2. Mining, Petroleum and Geophysics Department, Shahrood University of Technology, Iran

  3. Jamshidi, M., 2004. computer software for tunnel blasting design with Nitro Nobel and Energy transfer from explosive to rock methods with parallel cut., B.Sc thesis (in Persian)., Mining, Petroleum and Geophysics Department, Shahrood University of

  4. Technology, Iran,

  5. Jamshidi, M. et al., 2008. Making computer software for blasting pattern design according to Nitro Nobel and Energy Transfer methods with parallel cut., 6th student mining conference, Amir Kabir University, Iran

  6. Jimeno, C.L., Jimeno, E.L., Carcedo, F.J.A., 1995. Drilling and Blasting of Rocks.

  7. Balkema, Rotterdam.

  8. Lopez, J., Carlos., 1995., Drilling and blasting for rock., Balkema

  9. Ostovar., R. 2002. Blasting in mines., Vol 2., pp 143., Amir Kabir University., Iran Singh. P. Xavier .P, 2005, Causes, impact and control of over-break in underground excavations. Journal of Tunneling and Underground Space Technology., Vol 20., PP

  10. Sifre. Y., 2003, Case of Modane access tunnel at Lyon-Turin-Ferroviaire project (LTF)., presentation at Politecnico di Torino

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