Dartford Cable Tunnel
Encyclopedia
The Dartford Cable Tunnel is a £11,000,000 tunnel upstream of the Dartford Crossing
built in 2003-4. Its diameter
is ~3m. It is designed to carry and allow for maintenance of 380kV National Grid electrical cable beneath the Thames
; it is accessible by foot as a crossing of the Thames, but by authorised personnel only.
Dartford Crossing
The Dartford - Thurrock River Crossing, Dartford River Crossing is a major road crossing of the River Thames in England, connecting Dartford in the south to Thurrock in the north, via two road tunnels and the Queen Elizabeth II Bridge. It opened in stages, the west tunnel in 1963, the east tunnel...
built in 2003-4. Its diameter
Diameter
In geometry, a diameter of a circle is any straight line segment that passes through the center of the circle and whose endpoints are on the circle. The diameters are the longest chords of the circle...
is ~3m. It is designed to carry and allow for maintenance of 380kV National Grid electrical cable beneath the Thames
River Thames
The River Thames flows through southern England. It is the longest river entirely in England and the second longest in the United Kingdom. While it is best known because its lower reaches flow through central London, the river flows alongside several other towns and cities, including Oxford,...
; it is accessible by foot as a crossing of the Thames, but by authorised personnel only.
See also
- Utility tunnelUtility tunnelA utility tunnel is a space for wires, conduits, pipes, and other conveyances used in the delivery of utilities with enough room for a human to enter. Modern pipes and cables need less attention and space than older varieties, so the construction of utility tunnels declined in the late 20th century...
- Utility vaultUtility vaultA utility vault is an underground room providing access to subterranean public utility equipment, such as valves for water or natural gas pipes, or switchgear for electrical or telecommunications equipment....
- UtilidorUtilidorA utilidor is a utility corridor built underground or aboveground to carry utility lines such as electricity, water and sewer. Communications utilities like fiber optics, cable television and telephone cables are also sometimes carried...
- Common utility ductCommon utility ductA common utility duct, sometimes called a common utility conduit, is any structure – above, on, or below ground – that carries more than two types of public utility lines...