Selection of a subway support system With Multi Criteria Decision Making Method
Subject Areas :
A.H Rostami
1
(دانش آموخته دکترای مهندسی معدن دانشگاهکاشان)
هادی Mokhtari
2
(استادیار گروه صنایع دانشگاه کاشان)
حسن Bakhshandeh-Amineh
3
(دانشیار گروه مهندسی معدن دانشگاه کاشان)
احمد Adib
4
(دانشیار گروه مهندسی معدن دانشگاه آزاد اسلامی واحد تهران جنوب)
Keywords: convergence, supports, multi-criteria making, Subsidence,
Abstract :
When the tunnel passes through the weak and different soil conditions, the soil between the tunnel and thesurface of the ground move. And the development of these movements to the surface of the ground will beaccompanied with the subsidence of the surface structures. Therefore in order to do necessary planning to createsupports considering the conditions of the location of doing the project, providing a decision making model isessential in choosing an appropriate option for tunnel supports in planning phase and designing the tunnelproject. The aim of this paper is to offer a useful design to specify and choose suitable options for Karaj subwaytunnel supports, as a good model for later stages use. This pattern is formed on the basis of technical, financial,administrating, social and effective factors on the site of doing the project by noticing a variety of criteria. Thefinal goal is selecting the most suitable option aimed all the probable options for choosing subway tunnelsupports system and noticing effective and important criteria on which basis and by using multi-criteria decisionmaking and new research methods during the operation, proper options are prioritize and ultimately the best onesare chosen. In AHP and TOPSIS methods, alternative (D) NATM method is selected as the best alternative forsupport system. On the other hand the results taken by numerical modeling with PLAXIS software shown thatalternative D is the best support system with 26mm displacement and 10mm subsidence in the section.
