- Tunnel - Wikipedia
A tunnel is an underground or undersea passageway 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 - Encyclopedia Britannica
A notable canal tunnel in England was the Bridgewater Canal Tunnel, built in 1761 by James Brindley to carry coal to Manchester from the Worsley mine Many more canal tunnels were dug in Europe and North America in the 18th and early 19th centuries
- How Tunnels Work - HowStuffWorks
Tunnel Basics A tunnel is a horizontal passageway located underground While erosion and other forces of nature can form tunnels, in this article we'll talk about man made tunnels -- tunnels created by the process of excavation
- 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
- The Main Types Of Tunnels - The Engineering Community
From cut-and-cover tunnels to service tunnels, each type of tunnel serves a unique purpose and requires specialized construction techniques Tunnels are essential for improving transportation, providing energy, and supporting urban growth
- Tunnel construction - Wikipedia
Tunnel construction is a subset of underground construction There are three basic types of tunnel construction in common use: Cut-and-cover tunnel, constructed in a shallow trench and then covered over Bored tunnel, constructed in situ, without removing the ground above They are usually of circular or horseshoe cross-section
- 22 Types of Tunnels - Uses, Advantages . . . - Engineering Learn
22 Types of Tunnels - Uses, Advantages Disadvantages - What Are Tunnels Used for? How Are Tunnels Built? Cut and Cover Tunnel, Bored Tunnel
- What does Tunnel mean? - Definitions. net
A tunnel is an underground passageway, dug through surrounding soil, earth or rock, and enclosed except for the entrance and exit, commonly at each end A pipeline is not a tunnel, though some recent tunnels have used immersed tube construction techniques rather than traditional tunnel boring methods
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