The study takes into account different classes of tunnel boring machines (TBM), with the aim of identifying correlation models which are meant to estimate, at a preliminary design phase, the construction time of a tunnel and to evaluate the mechanical and operational parameters of the TBMs, starting from the knowledge of the tunnel length and the excavation diameter. To achieve this goal, ﬁrst of all a database was created, thanks to the collection of the most meaningful technical parameters from a large number of tunnels; afterwards, it was statistically analyzed through Microsoft Excel. In a ﬁrst phase, forecasting models were identiﬁed for the three types of machines investigated, separately for compact rocks (open TBM) and fractured rocks (single and double shield TBM). Then, the mechanical parameters collected through the database were analyzed, with the aim of obtaining models that take into account, in addition to the type of TBM, the geological aspect and the type of rock characterizing the rock mass. Finally, the validation of the study was proposed in a real case, represented by the Moncenisio base tunnel, a work included in the new Turin–Lyon connection line. The estimated values were compared with the real ones, in order to verify the accuracy of the experimental models identiﬁed.
Performance Analysis of Tunnel Boring Machines for Rock Excavation / Cardu, Marilena; Catanzaro, Ettore; Farinetti, Angelo; Martinelli, Daniele; Todaro, Carmine. - In: APPLIED SCIENCES. - ISSN 2076-3417. - ELETTRONICO. - 11:6(2021), p. 2794. [10.3390/app11062794]
|Titolo:||Performance Analysis of Tunnel Boring Machines for Rock Excavation|
|Data di pubblicazione:||2021|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.3390/app11062794|
|Appare nelle tipologie:||1.1 Articolo in rivista|