The types of brushes for TBM (full section tunnel boring machine) mainly include the following:
Disc cutter: This is the most important rock breaking tool of TBM, installed on the cutter head. When the disc cutter rotates, it rolls and breaks rocks on the rock surface in concentric circles through its own rotation and revolution.
Reaming knife: used to enlarge the diameter of the excavated tunnel to ensure that the tunnel size meets the design requirements.
Edge knife: installed at the edge of the cutterhead, used to cut rocks along the contour of the tunnel.
Central knife: located at the center of the cutterhead, used to break rocks in the central area.
Cutting knife: used to cut rocks in specific areas, usually used for excavation work under complex geological conditions.
Bucket scraper: used to clean the rock debris generated during excavation and collect it into the bucket for subsequent processing.
These cutting tools are selected and configured according to different geological conditions and tunnel specifications to ensure the efficiency and safety of TBM during excavation.
