Mechanized tunneling systems are an extraordinary combination of different manufacturing conditions in the construction industry. This allows to investigate different scenarios of the TBM operational parameters for subsequent excavation steps and can assist the engineers to make informed decisions aiming to optimize the construction process. The concept of real-time simulations for computational steering requires to set up predictive simulation models in the design stage of a tunneling project, which are continuously updated with monitoring data during the construction process, see Fig. Therefore, as an additional tool to usual process monitoring, process simulations, which must be obtained in real-time, can be used to effectively support controlling and steering of the tunneling construction processes. The numerical simulations can also be employed to perform the system predictions simultaneously to the construction process in order to support the selection of adequate process parameters. In contrast, numerical methods have recently become an important tool to investigate and predict soil-structure interaction effects in the design phase of tunneling projects.
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