Tunnels: Difference between revisions
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*Wikipedia on large tunnel-boring machines - [https://en.wikipedia.org/wiki/Tunnel_boring_machine] | |||
*There is huge red tape for building tunnels, and costs are $100M-$1B per mile [https://www.nbcnews.com/tech/tech-news/urban-tunnels-musk-s-boring-co-draw-industry-skepticism-n1269677]. The Boring Company was supposed to do $10M/mile | *There is huge red tape for building tunnels, and costs are $100M-$1B per mile [https://www.nbcnews.com/tech/tech-news/urban-tunnels-musk-s-boring-co-draw-industry-skepticism-n1269677]. The Boring Company was supposed to do $10M/mile | ||
*Boring machines - called moles - cost a million. They work like this [https://science.howstuffworks.com/engineering/structural/tunnel.htm#:~:text=Tunneling%20through%20soft%20rock%20and,moles%2C%20to%20create%20the%20tunnel.] | *Boring machines - called moles - cost a million. They work like this [https://science.howstuffworks.com/engineering/structural/tunnel.htm#:~:text=Tunneling%20through%20soft%20rock%20and,moles%2C%20to%20create%20the%20tunnel.] | ||
*In soft rock Youtube - digging for gold [https://www.youtube.com/watch?v=BRS1aoomuSc&t=49s] | *In soft rock Youtube - digging for gold [https://www.youtube.com/watch?v=BRS1aoomuSc&t=49s] | ||
*Rock bolts are used to stabilize a tunnel - [https://www.youtube.com/watch?v=xNDppVTVUss] | *Rock bolts are used to stabilize a tunnel - [https://www.youtube.com/watch?v=xNDppVTVUss] | ||
Revision as of 03:11, 11 September 2022
- Wikipedia on large tunnel-boring machines - [1]
- There is huge red tape for building tunnels, and costs are $100M-$1B per mile [2]. The Boring Company was supposed to do $10M/mile
- Boring machines - called moles - cost a million. They work like this [3]
- In soft rock Youtube - digging for gold [4]
- Rock bolts are used to stabilize a tunnel - [5]