Tunnels: Difference between revisions
From ASDSO Dam Safety Toolbox
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Revision as of 02:53, 18 November 2022
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| Typical tunnel diagram (FERC) |
Tunnels are long underground excavations with two or more openings to the surface, usually having a uniform cross section used for access, conveying flows, etc. Tunnels are most often used in mountainous areas. Tunnels can be divided into two basic types, lined and unlined.
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Revision ID: 4329
Revision Date: 11/18/2022