JOURNAL OF ROCK MECHANICS

JOURNAL OF ROCK MECHANICS

Selecting the Appropriate Tunnel Boring Machine (TBM) Using Fuzzy-TOPSIS Technique Case Study: Emam Zadeh Hashem Tunnel

Document Type : Original Article

Authors
Reza Mikaeil 1
Peyman Jafar Shirzad 1
Jafar Khademi Hamidi 2
1 Urmia University of Technology, Urmia, Iran.
2 Faculty of Engineering, Tarbiat Modares University, Tehran, Iran.
Abstract
The use of full-section mechanized tunnel boring machines under various geological conditions for the purpose of excavating long tunnels has expanded greatly in recent years. Selecting the appropriate full-section tunnel boring machine is one of the important and decisive steps in advancing the excavation process. In this regard, the most appropriate machine can be selected based on the characteristics of the excavation environment and the tunnel boring machine. In the first step of this research, criteria such as: RQD index, compressive strength, tensile strength, instability of the abutment, instability of the walls, spacing of discontinuities, water intrusion, fault zones, dissolution cavities, tunnel diameter, tunnel slope, and radius of curvature of the route in the second section of the Imamzadeh Hashem (AS) tunnel were evaluated, and in the next step, the most appropriate mechanized tunnel boring machine was examined and selected from among the four proposed machines. Thus, using the Fuzzy-TOPSIS method and taking into account the opinions of experts, the most suitable mechanized tunnel boring machine was selected for the excavation of the second section of the Imamzadeh Hashem (AS) Tunnel. The results of the study showed that, according to the aforementioned criteria, the Double Shield Universal TBM tunnel boring machine is the most suitable option for the excavation of the second section of the Imamzadeh Hashem (AS) Tunnel.
Keywords
Tunnel Boring Machine Selection
Fuzzy-TOPSIS method
Emam Zadeh Hashem Tunnel
Double Shield Universal TBM
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JOURNAL OF ROCK MECHANICS
Volume 1, Issue 2
Summer 2017
Pages 29-40