crs1026
Superstar
When you say white superstructure - are you talking about the tall structure or the long white structure running the length of the launch shaft and TBM support area?
The long white structure makes obvious sense for a conveyer for but I don't see how the tall structure integrates with the conveyer system.
I was referring to both, but I'm not knowledgeable about what does what.... I assume that the tall structure is somehow involved in raising the spoils above the tunnel level, processing them (they are measured and weighed somewhere along the process) along with perhaps managing the lengths of the in-tunnel conveyor belt which must be added as the TBM advances.
This is all very exciting to see. I've seen footage of TBMs before, but I don't think I have ever seen it in the launch shaft with all the support operations. It's really quite a site to see how many different parts there are in and around the launch shaft. So much so that you can hardly see in the shaft unless you're looking from a close to the side & high altitude. Unfortunately because of all these other pieces, you won't be able to see into the shaft from the pedestrian bridge when it opens again in the Spring.
It's very cool. Seems that many of us are latent sidewalk supervisors who are as absorbed by the construction process as the end product.
- Paul