3 ms·

I'm curious about the seals between sections. How they do that?

• mertd 5y ago
  and how is the bulkhead removed?
  • dghughes 5y ago
    Especially s bulkhead that's between two segments that are both underwater.
    • erentz 5y ago
      I'm assuming the bulkhead is secured inside the tube. Once complete you enter at the end of the tube (on landside) and sequentially go through removing each bulkhead from the inside of the tube.
• jccooper 5y ago
  It seems that they have rubber gaskets on the ends. Once the sections are in place, friction (from the foundations and overburden of that segment and the rest of the tunnel) would hold it in place. There do also seem to be systems that have cables to keep the segments in tension. https://www.penta-ocean.co.jp/english/business/civil/crawnciel.html https://www.penta-ocean.co.jp/english/business/civil/crawnci...