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    Ground Squeezing Effects on the Analysis and Design of Tunnels

    , M.Sc. Thesis Sharif University of Technology Amini Motlagh, Peyman (Author) ; Sadaghiani, Mohammad Hossein (Supervisor)
    Abstract
    Ground squeezing is defined as time-dependent shear displacement of rock mass that causes the decrease of the calculated excavation area of tunnels.Ground squeezing is one of the phenomenons that causes serious problems including the collapse of tunnels’ walls and TBM jamming during the construction of tunnels. Hence, the assessment of ground squeezing is an essential issue in tunneling. In this thesis, different ground squeezing potential prediction methods will be assessed. These methods consist of empirical, semi-emperical, analytical, and numerical methods. After assessing the ground squeezing potential, if it is evaluated high for a project, it will be required to consider the...