After a project time extended to almost 15 years and more than doubled cost (from 1,4 Billion euros to 3,1 Billion euros) and some 17th century buildings sunk as a result of somewhat sloppy Tunnel Boring Machine operation, CNN looks at the bright...

Paper in English. It is useful in general for tunnel operations work. In English and full text open without paying. Operational And Maintenance Features Of The Sv. Tri Kralja Tunnel Zvonimir Deković Boris Cviljak Igor...

Two Spanish transport executives have been fired after a train fiasco that saw the design of 31 trains that were too big for the tunnels on the line where they would...

  A 1:87 scale model of a Gripper TBM model is for sale at Railway Model Store. It is very cute, isn't is? I think it is. It costs £299.95 incl VAT. `Some assembly required`, basically gluing a few parts. Obviously there is...

https://www.youtube.com/watch?v=Bt1p3_lLxQ0

https://www.youtube.com/watch?v=nLol0YLSbpM

https://www.youtube.com/watch?v=TXp92YF62jw

  Interesting to know. https://www.rferl.org/a/ukraine-war-soledar-tunnels-russia/32222574.html #RussiaInvadedUkraine    

The Suez Canal tunnel construction scheme is the largest tunnel project in the history of Egypt and the Middle East. https://see.news/heres-all-on-suez-canal-tunnel-construction-project

A friend of mine forwarded this to me. Sandvik describes it as "Sandvik DT821-SC is a two boom electro-hydraulic jumbo for fast and accurate drilling in tunneling and cavern excavation. The hydraulic controlled drilling system with added...

Regards, Keith.

I wish everyone happy 2023 E.Kadar

  or, Hyvää uutta vuotta! as we say in Finnish. I would be interesting to see this greeting in own language. Happy 2023 and beyond!

This article about tunnels and bridges crossing Istanbul Strait in Turkey. https://www.kadn.com/features/the-gigantic-tunnels-and-bridges-linking-asia-to-europe/article_9abce43b-b47a-5c9a-bb38-36e1470998bf.html

CNN gives Singapore as exemplary nation for using underground space. https://edition.cnn.com/2022/12/21/world/underground-development-singapore-dtss-tnf-spc-intl/index.html

Interesting article. https://www.newcivilengineer.com/opinion/editors-comment-tunnelling-projects-show-that-a-long-term-infrastructure-view-is-needed-22-12-2022/

Bouygues TP descrives the Tuen Mun-Chek Lap Kok Link tunnel as; The 5 kilometre-long Tuen Mun-Chek Lap Kok Link twin-tube tunnel will link the New Territories in the north to the artificial island of Hong Kog-Zhuhai-Macao Bridge Hong Kong Port,...

https://www.pbs.org/wgbh/nova/video/super-tunnel/

  https://www.youtube.com/watch?v=82FjTM3Rf1U Ten years ago the gigantic concrete ceiling panels of Sasagi road tunnel in Otsuki, Yamanashi Prefecture has collapsed. It was on 2 December 2012. The metal parts holding giant concrete...

Once upon a time. https://www.mylondon.news/news/nostalgia/gallery/brilliant-forgotten-london-underground-photos-25603008