What are under sluices?

: a sluice covered from view or lying beneath another structure. specifically : a wasteway for sluicing out canals in which the waste escapes beneath other structures.

What are under sluices and their functions?

The main functions of under-sluices are:

o To maintain a well defined deep channel approaching the canal head regulator. o To ensure easy diversion of water into the canal through the canal head regulator even during low. flow. o To control the entry of silt into the canal.

What is under sluice structure?

Explanation: Under-Sluices (or Scouring Sluices): The under sluices are the openings that are located on the same side as the off-taking canal and are fully controlled by gates, provided in the weir wall with their crest at a low level.

What is under sluice gate?

"Sluice gate" refers to a movable gate allowing water to flow under it. When a sluice is lowered, water may spill over the top, in which case the gate operates as a weir. Usually, a mechanism drives the sluice up or down.

What is the crest of under sluice?

The crest level of under sluices should be about 1 m below the crest level of the head regulator of the canal, if no silt excluding device is provid in the river.

Part 20 ! Under sluice ! Divide wall ! Parts of diversion head work ! Scouring sluice !Divide groyne

Is to separate the under sluices from the weir?

Explanation: Divide wall: This is much like a pier and is provided between the sets of under sluice or river sluice or spill bays. It separate under sluices from the main weir.

What is called sluice?

: an artificial passage for water (as in a millstream) fitted with a valve or gate for stopping or regulating flow. : a body of water pent up behind a floodgate. : a dock gate : floodgate. 3. : a stream flowing through a floodgate.

What is under sluice in headwork?

Under Sluices or Scouring Sluices

Piers are constructed at regular intervals between the piers gates are provided. The flow of water is controlled by the approach channel of the weir is discharged to the downstream side by opening the gates. Due to this reason, they are also known as scouring sluices.

What is the difference between sluice gate and spillway?

A sluice gate moves up and down in a vertical plane above the spillway in order to control flow. The water passes under the gate as it moves over the spillway. For this reason it is also called a vertical gate or underflow gate. The width of the sluice gate must be specified.

What is the difference between a penstock and a sluice gate?

A penstock is a water control gate or structure that controls flow. Penstocks may also be known as Sluice gates, Slide gates or Stopgates. Penstocks are designed for flow regulation, diversion, level control or isolation.

What is divide wall and under sluices?

A divide wall is a long masonry or concrete wall or groyne (an embankment protected on all sides by stone or concrete blocks) which is constructed at right angles to the axis of the weir to separate the under sluices from the rest of the weir.

What is the purpose of construction of sluice?

The sluice gate is one of the main buildings in water conservancy projects such as irrigation and waterlogging. It is mainly: the function of controlling the flow scene and adjusting the water level through sluice gate hoist.

What is the effect on flow beneath a sluice gate?

Flow under a sluice gate is an example of converging flow where the correct form of the equation for discharge may be obtained by equating the energies at Sections 1 and 2 as shown in the Fig. 1, as the energy loss between these sections is negligible.

How do sluices control the flow of water?

Sluice gates restrict flow, by allowing the release of water below the surface which can create dangerous eddies, unseen recirculation, siphons and undertows. Water management systems may be fixed, be operated manually, automatically or remotely.

Why do dams have sluice gates?

These are adjustable gates which can control the water flow of rivers, streams and reservoirs. Therefore, they act as a type of barrier as well for storage of additional water too. They help to pass water safely and in a controlled way around, over and through a dam when there is an excess of water.

Why do dams sluice?

For dams like Fontana, the choices are either to sluice or to spill. A spillway simply allows excess water to flow over the top of the dam, maintaining a maximum lake level. But because Fontana needs more control over water levels, the choice is sluicing – carrying water away from the lower depth of the lake.

What is the difference between sluice and weir?

The most common type is a vertical rising sluice gate valve. This valve has a gate that rises (to allow fluid to flow under it) and lowers (to stop the flow.) If fluid can flow over the top of a sluice gate when it is closed, the gate is known as a weir gate.

Is a sluice a floodgate?

Sluice gates consist of an aperture within existing floodgate with a sliding plate cover that can be opened to varying degrees. This opening can be vertical, horizontal or rotational in design.

What is the storage of water in a reservoir upto top level of sluice gates called?

Valley storage:- The volume of water stored by the natural river channel in its valley up to the top of its banks before constructing of a reservoir is called the valley storage. The valley storage depends upon the cross-section of the river.

What are the functions of an under sluice and silt excluder in a diversion headwork?

Answer: Silt excluder is a structure constructed in the bed of a river, u/s of a head regulator to attack the river bed water and divert the same into the d/s of the river. Its main function is to prevent the entry of silt into the canal. A typical silt excluder is shown in the figure.

What is a sluice in topo map?

Sluice - it is printed on the Survey sheet in black. It is a water channel controlled at its head by a gate. it is a movable gate allowing water to flow under it eg.

What is the difference between weir and barrage?

Barrages are built near cities so that the amount of water flowing in the river can be controlled by opening and closing the gates to save the city from flooding. A weir, in contrast, is built, for example, in tourist destinations and preservation areas to allow the fish to swim upstream.

How much water is in a sluice?

The more water volume the better and generally speaking it doesn't hurt to fill the sluice with water right to the top of the sides if you can. A good recommended minimum depth is about 2 inches.

What is the difference between sluice and monk?

Monk is similar to that of the sluice but built inside the pond dyke and on the dyke of the pond. Monk can never be used as inlet as sluice can be. The monk structure consists of a horizontal drainage pipe and the vertical structure, or monk. The drainage pipe runs from back side of the monk.

What is a sluice drain?

Sluice sinks (also referred to as disposal units and slop hoppers) are designed for use in hospitals, nursing homes and GP surgeries to enable the safe and hygienic disposal of clinical waste, such as the contents of vomit bowls, drainage bags, bedpans, and urine bottles.