Identifying Rock Loads on TBM Shields During Standstills (Non-Advance-Periods)

Abstract Tunnel boring machine (TBM) operational data is mostly analysed with respect to that was recorded during the advance of TBM. Focusing on standstills a gripper TBM, we analyse rock loads were passively in cylinders small roof support shield. These are situated beneath TBM’s shield – extending it against mass non-advance periods. Equipped pressure sensors, they enable unique opportunity logging load variations throughout tunnel. Hence due big amount resulting data, techniques unsupervised learning (i.e. cluster analysis) used automatically pre-process TBM data. Furthermore, regression analysis determine sections tunnel where mainly occurring left or right side respectively. The driven shows main which good accordance observation from construction site, as well numerical models literature. This paper contributes towards understanding conditions anisotropic masses drive deep hard