TBM Selection Using Fuzzy AHP and Fuzzy TOPSIS

Tunnel boring machines (TBMs) are one of the mechanized drilling tools that have grown because they have good performance. Selection type of TBM depends on the various parameters that some of these parameters are in conflict with each other. Therefore, TBM selection process is very complex. There are different methods for decision making and selection that can mention methods such as multi criteria decision making, Fuzzy logic and Expert System methods. AHP and TOPSIS methods of the subsets of multi criteria decision making method are appropriate tools for selection under the complicated circumstances. On the other hand due to exist uncertainty in the collection of information, using fuzzy approach is useful. In this paper a combination approach Fuzzy AHP and Fuzzy TOPSIS is used to select optimized TBM for water transfer tunnel of Dashte Zahab. The results show double shield TBM is the most appropriate TBM for this tunnel.

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