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.
Learn about the history, methods, uses, and facts of tunnels and underground excavations. Explore how tunnels have been built for mining, transportation, water, and other purposes since ancient times.
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 translate it in different languages.
Learn about the types, characteristics and challenges of tunnels, from mining to transportation. Explore the history, examples and future of tunnel engineering and construction.
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.
A soft-ground tunnel below the water table involves a constant risk of a run-in—i.e., soil and water flowing into the tunnel, which often results in complete loss of the heading. One solution is to lower the water table below the tunnel bottom before construction begins.
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.
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