Tunnel boring machine
 Tunnel boring machine  (technology)   | |
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| Interest of | Richard Sauder |
A tunnel boring machine (TBM) is a circular machine used to excavate tunnels in soil and rock. Tunnel diameters can range from one to ~18 meters. Tunnel boring machines are used as an alternative to drilling and blasting methods in rock and have the advantages of limiting the disturbance to the surrounding ground and producing a smooth tunnel wall. This significantly reduces the cost of lining the tunnel, and makes them suitable to use in heavily urbanized areas. TBMs are expensive to construct, and can be difficult to transport; this is why the longer a tunnel project is, the more the relative costs of a TBM go down.
Nuclear subterrene tunneling
Patents issued in the 1970s indicate that U.S. scientists had planned to use nuclear power to liquefy lithium metal and circulate it to the front of the machine, using the very high temperature and immense pressure to melt and push through rock.[1][2][3] The molten rock is pushed around the edges as the vehicle is forced forward, and cools to a glass-like lining of the tunnel.
Weblinks
- Archived discussion about underground installations from the PrisonPlanet forum (all four pages archived)
Related Quotation
| Page | Quote | Author |
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| Richard Sauder | “One of the global Shadow Government’s biggest projects over the last several decades has been the construction of numerous Top Secret underground and undersea bases, as well as secret tunnels, all over the world. [...] The majority of the world’s population knows very little about this ambitious program, and remains ignorant of what is happening undersea and underground. This has been going on at least since the end of World War II. A lot of it may have started with the Nazi engineers in the Third Reich, but it absolutely did not end with them.” | Richard Sauder |
