Park Kwang-ho
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A tunnel is relatively long and narrow; the length is often much greater than twice the diameter, although similar shorter excavations can be constructed, such as cross passages between tunnels. A tunnel made by an animal is commonly referred to as a burrow and may or may not have multiple portals.
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. Tunnels have many uses: for mining ores, for transportation —including road vehicles, trains, subways, and canals ...
Learn the meaning of tunnel as a noun and a verb, with examples of usage and related words. Find out how to pronounce tunnel and how to say it in different languages.
Learn the meaning, history, and usage of the word tunnel as a noun and a verb. Find synonyms, examples, phrases, and related words for tunnel.
Learn about different techniques and applications of tunneling in geotechnical engineering. Explore topics such as cut-and-cover, jacked box, bored method, subsea tunneling and more.
From subterranean roadways to the network of tubes that form mass transit systems, tunnels are among the most critical pieces of infrastructure that keep our...
Learn about the history, types and factors of tunneling in construction. Find out the pros and cons of tunneling compared to open cuts, and the approaches and alignment of tunnels.
