Steel Ring of the Tunnel Door  

Steel Ring of the Tunnel Door The Tunnel Ring of the tunnel door is a pre-embedded part Tunnel Door Ring for waterproof measures at the entrance and exit of the shield Steel Ring Of Tunnel. The opening sealing device is generally composed of a pre-embedded steel ring plate, a cord rubber plate, a fan-shaped flap, a ring plate, a pressing plate, and supporting bolts. The door Steel Ring Of Tunnel is a ring-shaped steel plate that is embedded in advance to temporarily block the end of the door when the shield machine enters and exits the cave. The overall structure of the door steel ring is a circular ring, close to the door, outward turn. The first step in the Tunnel Steel Ring fabrication process is to assemble mesh reinforcing cages on-site.  Once built, a cage is sent to the segment carousel building on an automated transfer cart. It is then placed in a mold, which has been cleaned and prepared in advance. …