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Big Becky TBM Breakthrough, Niagara Falls, March 1, 2011
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- čas přidán 28. 02. 2011
- Big Becky, the worlds largest hard rock TBM (14.4m) breaks through into the grout tunnel in Niagara Falls, Canada. Becky has 290m left to tunnel before completing the mining stage of the Niagara Tunnel Project, which will supply water to the Sir Adam Beck Power Station. The power generated from this tunnel project will power 110,000 North American homes with green power. Ontario Power Generation, Hatch Mott and Strabag combined to envision, design and construct this enormous tunnel through very difficult ground. Congratulations to all those involved in the project.
What a masterpiece of video editing, cutting out some of the most essential parts of the breakthrough -.-
My hubby and my brother in law both work(ed) there...amazing!!!
Are they UNION
I know that Americans are not stupid but VisitTexas certainly isn't helping that image. I suggest you look up "Big Dig" on Wikipedia if you want to know how the city of Boston handled building a 5.6km road tunnel. Estimated cost $1.6 Billion, final cost $22 Billion.... OMG... Happy tunneling, Go Big Becky!!
Very impressive, but not "very difficult ground". Engineering and Contractors did an amazing job of finds and utilizing the best ground available.
@rhymeandreasoning The falls are eroding naturally due to it's geological stratification (hard capstone, softwer underlying layers). The reduction in discharge as a result of projects such as the Sir Adam Beck #2 actually SLOWS the natural erosion of the waterfall....
But you knew that right? Try learning.
Great to watch Dave,, bloody hell,,
Damn, That is a HUGE TBM!
Someone tell me how the original 2200 foot long massive tunnels were dug back in late 1800's or early 1900's? Links appreciated...
with up to 6 meters of overbreak and some serious convergence followed by two major rock falls progress was extremely slow. The TBM had to b completely remodelled on L1. The tunnel alignment was altered at the 3+200 m mark because the ground was so challenging. This added over 2 years to the tunnelling, 4 years to the overall project and doubled the original cost. I think it's safe to say the ground wasn't very easy.....
14.4 meters (47.244094 feet) wide. A massive cutterhead.
Wow, that wheel looked about 5 or 6 feet wide when it was just starting through. Then at the end you can see how big it is, must be 20 to 30 feet wide.
i cant tell you exactly for this big diameter, but average they move 1000m^3, and need up to 10MW electrical power
wow, about 42 feet diameter
Must me re-do with new better video quality. :)
I need a nano-version for arteries.
It's called a stent. : )
I know this is 7 years old lol but I just saw a video from a company that made a nano-version of this for arteries. Look it up.
@VisitTexas More likely you guys could've blasted through it with all your "hot air", LOL.
BTW I have "visited Texas", nice place but I wouldn't wanna live there. Especially after BP's giant mess.
CAHSR project need about four of these boring machines for 7,000, 10,000ft San Gabriel Mountains. ;P
Deutsche Wertarbeit,Firma Strabag .
@Glacigenic ow ;-(
Buy yourself a tripod !
americans could have dug that tunnel in 2 hours with their bare hands.
just a matter of time now before the entire falls collapse..leave it to us Canadians..
To cheep to bring a tripod ..This looks like someones lame cell phone recording