A sluice (from the Dutch "sluis") is a water channel controlled at its
head by a gate. A mill race, leet, flume, penstock or lade is a sluice
channelling water toward a water mill. The terms sluice, sluice gate,
knife gate, and slide gate are used interchangeably in the water and
wastewater control industry.
A sluice gate is traditionally a wood or metal barrier sliding in
grooves that are set in the sides of the waterway.
Flap sluice gate A fully automatic type, controlled by the pressure head across it; operation is similar to that of a check valve. It is a gate hinged at the top. When pressure is from one side, the gate is kept closed; a pressure from the other side opens the sluice when a threshold pressure is surpassed. Vertical rising sluice gate A plate sliding in the vertical direction, which may be controlled by machinery. Radial sluice gate A structure, where a small part of a cylindrical surface serves as the gate, supported by radial constructions going through the cylinder's radius. On occasion, a counterweight is provided. Rising sector sluice gate Also a part of a cylindrical surface, which rests at the bottom of the channel and rises by rotating around its centre. Needle sluice A sluice formed by a number of thin needles held against a solid frame through water pressure as in a needle dam. Van gate This type of gate was a Dutch invention in the early 19th century. The Van door has the special property that it can open in the direction of high water solely using water pressure. This gate type was primarily used to purposely flood certain regions, for instance in the case of the Hollandic Water Line. Nowadays this type of gate can still be found in a few places, for example in Gouda.
The design of a Van gate is shown in the image on the lower right. The sluice has a separate chamber that can be filled with water and is separated by the high water level side of the sluice by a large door. When a tube connecting the separate chamber with the he high water level side of the sluice is opened, the water level and with that the water pressure in this chamber will raise to the same level as that on the high water level side. The surface of the door separating the chamber from the high water level side of the sluice is larger than that of the door closing the sluice. Since pressures are equal this results into a net force that opens up the sluice.
A van sluice 1: Tube connecting the chamber to the high water side of the sluice 2: Gates to regulate the water level in the chamber 3: Tube connecting the chamber to the low water side of the sluice 4: The chamber in which the water level can be controlled 5 Door with larger surface 6: Door with smaller surface. When the tube to the high water level side is opened the water level in the chamber will raise to this same level. Due to the difference in the surfaces of the doors there will be a net force opening up the gate.
The Korenbrugsluice in Gorinchem is a Van sluice
Regional names for sluice gates
In the Somerset Levels, sluice gates are known as clyse or
Most of the inhabitants of
^ Jones, Robert C. (1979). Two Feet Between the Rails (Volume 1 - The Early Years). Sundance Books. ISBN 0-913582-17-4. ^ "FOCUS on Industrial Archaeology No. 68, June 2007". Hampshire Industrial Archaeology Society website. Archived from the original on 2007-11-10. Retrieved 2007-10-30. ^ Dunning R. W. (2004). History of the County of Somerset: Volume 8: The Poldens and the Levels (Victoria County History). Oxford: Oxford University Press. ISBN 1-904356-33-8. ^ "'Huntspill', A History of the County of Somerset: Volume 8: The Poldens and the Levels". British History Online. Retrieved 2007-10-30. ^ "The water regulation technology of ancient Sri Lankan reservoirs: The Bisokotuwa sluice" (PDF). slageconr.net. p. 1. Retrieved 14 August 2012.
Crittenden, H. Temple (1976). The Maine Scenic Route. McClain Printing. Moody, Linwood W. (1959). The Maine Two-Footers. Howell-North. Cornwall, L. Peter & Farrell, Jack W. (1973). Ride the Sandy River. Pacific Fast Mail.
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