Tunnels: Difference between revisions
From ASDSO Dam Safety Toolbox
No edit summary |
Rmanwaring (talk | contribs) No edit summary |
||
| Line 15: | Line 15: | ||
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. | 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. | ||
==Best Practices Resources== | <noautolinks>==Best Practices Resources==</noautolinks> | ||
{{Document Icon}} [[Engineering Guidelines for the Evaluation of Hydropower Projects: Chapter 12- Water Conveyance| Engineering Guidelines for the Evaluation of Hydropower Projects: Chapter 12- Water Conveyance | {{Document Icon}} [[Engineering Guidelines for the Evaluation of Hydropower Projects: Chapter 12- Water Conveyance| Engineering Guidelines for the Evaluation of Hydropower Projects: Chapter 12- Water Conveyance, FERC, 2018]] | ||
{{Document Icon}} [[Design Standards No. 3: Water Conveyance Facilities, Fish Facilities, and Roads and Bridges (Ch. 4: Tunnels, Shafts, and Caverns)| Design Standards No. 3: Water Conveyance Facilities, Fish Facilities, and Roads and Bridges (Ch. 4: Tunnels, Shafts, and Caverns) | {{Document Icon}} [[Design Standards No. 3: Water Conveyance Facilities, Fish Facilities, and Roads and Bridges (Ch. 4: Tunnels, Shafts, and Caverns)| Design Standards No. 3: Water Conveyance Facilities, Fish Facilities, and Roads and Bridges (Ch. 4: Tunnels, Shafts, and Caverns), USBR, 2014]] | ||
<!-- In the location of an in text citation, simply enclose the citation as follows: <ref> citation </ref>. Citations will automatically populate. Learn more at https://www.mediawiki.org/wiki/Help:Cite. --> | <!-- In the location of an in text citation, simply enclose the citation as follows: <ref> citation </ref>. Citations will automatically populate. Learn more at https://www.mediawiki.org/wiki/Help:Cite. --> | ||
Revision as of 00:44, 14 December 2022
|
| 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.
Best Practices Resources
Citations:
Revision ID: 5545
Revision Date: 12/14/2022