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Paper
Title

New Approach in Tunneling Construction Using the Forepooling Technique

Year: 1396
COI: ITC12_001
Language: EnglishView: 246
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Authors

Masoud Ghaemi - phD Candidate in Rock Mechanic, Engineer Sepasad Group, Coach of Shams University,
Alireza Khalili - Student of Geotechnic, Shams Higher Education Institute, Gonbad-e Kavus
Majid Matloobi - Engineer Sepasad Group
Ahmad Faramarzi - Engineer Sepasad Group

Abstract:

Austrian Tunneling is mainly applicable for big section tunnels. The tunnel is excavated step by step in thistechnique. Furthermore, forepoling, jet grouting and freezing are the techniques applied to construct falling tunnels;however, Austrian tunneling should not be used alone in medium section tunnels such as water conveyance tunneland falling tunnels. As a result, the authors have introduced a new technique called Right-Left technique. In thistechnique, first forepoling, also known as tube umbrella, was used to strengthen tunnel. Then, having divided tunnelinto two left and right sections, the right section was excavated exactly the size of half a steel frame and shotcretetechnique was immediately used. The same technique was applied to the left section. Then, the face was advanced bydrum cutter up to the area excavated by steel frame. The operation cycle was completed in this way. Relative stabilitywas obtained by using this technique. In this paper, technical reasons for choosing this technique was presented.Furthermore, using Flac 3D, its convergence was compared with that of the Austrian.

Keywords:

NATM Method; Forepooling; Right-Left; Flac3D

Paper COI Code

This Paper COI Code is ITC12_001. Also You can use the following address to link to this article. This link is permanent and is used as an article registration confirmation in the Civilica reference:

https://civilica.com/doc/867742/

How to Cite to This Paper:

If you want to refer to this Paper in your research work, you can simply use the following phrase in the resources section:
Ghaemi, Masoud and Khalili, Alireza and Matloobi, Majid and Faramarzi, Ahmad,1396,New Approach in Tunneling Construction Using the Forepooling Technique,12th Iranian & 3rd Regional Tunnelling Conference,Tehran,,,https://civilica.com/doc/867742

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