Visiting a MASSIVE Tunnel Boring Machine on the Eglinton West Extension!

Fun fact: Many tunnel boring machines are used once, or even left in the ground (the ones for the Chunnel are still sitting under the channel!)

Whyyyy didnt you include any original sound!!

Do they make a loud trumpet sound? Saw someone say that on Instagram

Are you not able to see the front of the TBM boring it's way through making the tunnel?

A TBM makes a JACKASS sound!💯

Thats an awesome experience, thanks for letting us get to see it!

Fantastic video. Thanks for bringing this to us!

May I talk about a northwest extension of line 5 from the planned extension to Pearson? Guideline #1 says staying on topic

If I had a billion dollars I would build one of these and prove to everyone the Devil is real. Go straight down and bust up their party.

Wow. This is amazing

when you said 130 meter i think you meant to say 1 1/2 football fields

😪

I'm not sure if I remember right, but if I understood it right, I think this method of injecting a stabilizer into the soil to prevent sinkholes while installing conrete rings as the machine is moving forward is called "New Austrian Tunnel building Method" (neue Österreichische Tunnelbauweise)? We use that in a lot of projects, mainly the U5 building and the U2 extension in Vienna, but also for the Semmering base tunnel.

This is impressive I would never be allowed/able to visit this. Nice to see how it works. Thanks for this video.

Would have been good to see how they supply power to the machine as it's progressing

Hi, video is really nice and informative, but in these type of videos instead only you and you speaking and explaining continuously, ask questions, or what this do that do to the engineers over there working on the project.

Have you seen the robot swarm tunnel boring technique? It's only had a scaled demo so far, but it looks like it could make the process much faster, safer, and more flexible in terms of tunnel shape and conditions.

I'm so fascinated with how you successfully arrive at your destination with out being able to see where you're going. I wonder what the margin of error is on where you pop out on the other end.

The first time I knew about the tunnel boring machine (TBN) was in 1982 while reading about the subway stations being built on the Washington Metro under Connecticut Avenue & Wisconsin Avenue, via the Red Line. This includes Forest Glen, as the deepest subway station in the United States, and Wheaton, as another deep station, but it is not as deep as Forest Glen. However, Wheaton has the longest escalators in the country. Also, I like some construction that consists of the tunnel boring machine being used on "soft" ground. I believe this method was used on Seventh Street for the Green and Yellow lines. I have saved many of your shows to watch as often as I wish.

Reece that was awesome! I want to see more of this. Keep it up