International Commission on Irrigation & Drainage Commission Interationale des Irrigation et du Drainage

Multilingual Technical Dictionary (MTD)

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Term No.Term Name/Term DescriptionAction
2471
Gallery
An opening or passage provided within the body of a structure that may run either transversely or longitudinally and may be either horizontal or on a slope......
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2472
Foundation gallery
A gallery provided in the dam body for access to the foundations for inspection and/or drainage for percolated water from the upstream face or seepage through the dam. Generally it is provided along the length of the dam near the rock-surfaces and conforming to the elevations in the transverse profile of the canyon, located near the axis of the dam.....
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2473
Drainage gallery
A supplementary gallery located further downstream of the foundation gallery for the purpose of drilling and draining the downstream portion of the dam......
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2474
Gate gallery
Gallery provided in dams for access to and room for the mechanical equipment used for the operation of gates in outlet conduits, power penstocks, or spillway crests......
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2476
Inspection gallery
Gallery provided in a dam, for access to the interior of the body-mass to inspect the structure and study the structural behaviour of the dam after completion. Foundation, drainage, gate and grouting galleries also serve as inspection galleries......
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4151
Infiltration tunnel, Infiltration gallery, or Kanat
Low gradient closed conduit (drain or tunnel) dug into an aquifer to collect groundwater by gravity flow.
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