- Tunnel - Wikipedia
It is dug through surrounding soil, earth or rock, or laid under water, and is usually completely enclosed except for the two portals common at each end, though there may be access and ventilation openings at various points along the length
- Tunnels and underground excavations | History, Methods, Uses, Facts . . .
tunnels and underground excavations, horizontal underground passageway produced by excavation or occasionally by nature’s action in dissolving a soluble rock, such as limestone A vertical opening is usually called a shaft
- How Tunnels Work - HowStuffWorks
In this article, we'll explore what makes tunnels such an attractive solution for railways, roadways, public utilities and telecommunications We'll look at the defining characteristics of tunnels and examine how tunnels are built
- TUNNEL Definition Meaning - Merriam-Webster
The meaning of TUNNEL is a covered passageway; specifically : a horizontal passageway through or under an obstruction How to use tunnel in a sentence
- 10 longest tunnels in the world that reshaped global transportation
Explore the world’s 10 longest tunnels, record-breaking engineering marvels that push the limits of design, scale, and human ambition
- Norway is building the world’s longest, deepest undersea road tunnel
The world’s longest and deepest undersea road tunnel is being built in Norway, intended to cut travel time between major cities and become part of a ferry-free highway along its western coast
- TUNNEL Definition Meaning | Dictionary. com
Tunnel definition: an underground passage See examples of TUNNEL used in a sentence
- TUNNEL definition in American English | Collins English Dictionary
A tunnel is a long passage which has been made under the ground, usually through a hill or under the sea Boston drivers love the tunnel
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