231–240 of 303 posts
Is this for real? They are basically getting orgasms just because someone drills a tunnel, which is indeed revolutionary for public transportation... And it transports a whopping 4500 people per hour, will you think of that! That is almost as much as a normal, 100 year old subway train can do in a few minutes.
Is this for real? They are basically getting orgasms just because someone drills a tunnel, which is indeed revolutionary for public transportation... And it transports a whopping 4500 people per hour, will you think of that! That is almost as much as a normal, 100 year old subway train can do in a few minutes.
ELI5... why is digging a tunnel tech news? Does Elon dig them faster or more cheaply or something? Otherwise do I submit this to HN? https://www.sydneymetro.info/tunnelling . I think tunnels are the future though for cities. But I'd prefer trains to be running in them, or roads that only allow electric public transport. Edit. In 1988 they started work on the Channel Tunnel UK to France: https://en.wikipedia.org/wiki/…
If you like tunnels, there will be 200km of tunnels built by 21 boring machines at the same time between 2020 and 2030 around Paris : https://en.wikipedia.org/wiki/Grand_Paris_Express
I am not French, I don't live in France, I don't speak French and I am not particularly interested in tunnels or rails. And probably that's why it's the first time I hear about this. But I am not American either, and I don't live there, but I have read about the expensive few mile extension of a subway line in the Upper East Side of Manhattan and the failed attempts to build a high speed train between LA and San Francisco hundreds of times.
A project of that scale in one of the largest Western capitals goes relatively unnoticed outside of France mainly because of language.
Think about what else is lost. I bet there are thousands of businesses, and lots of culture which never get noticed mainly because of language.
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If you like tunnels, there will be 200km of tunnels built by 21 boring machines at the same time between 2020 and 2030 around Paris : https://en.wikipedia.org/wiki/Grand_Paris_Express
Thanks for posting. This really shows the power of the English language. I am not French, I don't live in France, I don't speak French and I am not particularly interested in tunnels or rails. And probably that's why it's the first time I hear about this. But I am not American either, and I don't live there, but I have read about the expensive few mile extension of a subway line in the Upper East Side of Manhattan an…
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He has said that he doesn't believe in induced demand: https://twitter.com/elonmusk/status/1211076829395738626?s=20
I think he's woefully disconnected from the non-rich person's life, then. He can already afford to buy however much space he wants. >If the transport system exceeds public travel needs, there will be very little traffic. Sure. But... it would take an enormous amount of development to make this happen, because so many people are going to want more space if they can have it with still a For all the talk of walkable nei…
Isn't it easier to persuade local residents to support a tunnel under their area than an above-ground structure in their area?
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Yeah OK, does anyone have the angle on that? Is there a new technology aspect here?
Along with the tunnelling speed improvements from what I'm gathering they are using model X chassis vehicles within the tunnels. The benefit of this is that you don't need rails, just line following sensors. There's no brake replacement because of regen etc. The main takeaway is that the carriage system will be able to be maintained by car mechanics and not locomotion engineers. What the stations will look like will…
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Though if they really dug that much tunnel under a city in such a short time, maybe there's an actual innovation in a better way to make subway tunnels? I think putting cars in these tunnels is silly and that subways are obviously the best answer personally, but I'm also watching two new light rail lines being put in next to my house. It does not seem quick (though they're elevated). It'd be lovely if those tracks we…
His goal is to somehow run a tunnel boring machine on Mars, right? He'll certainly be testing out new tech if that's the goal. These machines are magnificently heavy at present, aren't they?
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Any detail specifically on the tunnels? That just mentioned 200km of track, but not whether above or below grade
all tunnels are below grade
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What is the bottleneck
Geotech is a bitch. Soils aren't homogenous and vary a lot in both composition and characteristics. There are multiple types of TBMs that are designed to operate under very specific conditions, for example a soft rock/soil TBM excavates through different mechanisms than a hard rock TBM. One of the big problems in any excavation is you have no idea what's actually down there until you start working in it. The underlyi…
Even if you had ideal conditions or an amazing new TBM that goes through any material, you're still dealing with a machine that scrapes at rocks for miles on end. The parts that do the digging need constant replacement, underground, on the inconvenient side of the boring machine, and even if you did the actual digging faster that'd mean repairing it even more often.
ELI5... why is digging a tunnel tech news? Does Elon dig them faster or more cheaply or something? Otherwise do I submit this to HN? https://www.sydneymetro.info/tunnelling . I think tunnels are the future though for cities. But I'd prefer trains to be running in them, or roads that only allow electric public transport. Edit. In 1988 they started work on the Channel Tunnel UK to France: https://en.wikipedia.org/wiki/…
Yes it is exactly that. A lot faster and much cheaper. Please watch the initial boring company presentation, the motivation is presented like in the first minutes. It is not like they are trying to hide anything, they are very open about what is new with their technology.