ABSTRACT
An advanced processes-oriented computational model for mechanized tunnelling has been extended to consider ground improvement by employing artificial ground freezing during the tunnel construction and excavation process. A numerical study is presented, in which the numerical simulation of the tunnel drive through a frozen ground is performed. The model considers the thermo-hydro-mechanical behaviour of the frozen ground and is capable of simulating tunnel advancement with mutual interactions between all relevant components, In this paper, the influence of the heat source induced by the TBM on the frozen ground during tunnel construction and the TBM advancement process is investigated numerically.
