What is diversion headwork?

Diversion head works Weir or barrage is constructed across a perennial river to raise water level and to divert the water to canal, is known as diversion head work.  Flow of water in the canal is controlled by canal head regulator.

What are the functions of diversion head works?

A diversion head work performs following functions: (i) It regulates the flow in the off taking canal. (ii) Silt entrance into the canal is controlled. (iii) It raises the level of water in the river. This causes diversion of the river water into the off taking canal, under gravity flow.

How many components the diversion headwork is divided?

Explanation: The diversion head work is generally divided into eight component parts, namely weir, divide wall, fish ladder, pocket or approach ladder, scouring sluices, silt prevention devices, canal head regulator, and river training works. 2.

How is diversion weir aligned?

Weirs are usually aligned at right angles to the direction of flow in the river. The ponding up of river for diversion of water into the off taking canal is achieved by means of gates (instead of shutters).

What is the difference between weir and barrage?

A weir is an impermeable barrier that is built across a river to raise the water level on the upstream side. It is usually built on the other side of a flooded river. On the other hand, a barrage involves adjustable gates installed over a dam to maintain the water surface at different levels and at different times.

What are the components of diversion headwork with typical layout?

Diversion headworks is a structure constructed across a river for the purpose of raising the water level in the river so that it can be diverted into the off taking canals. It is also known as canal headworks and performs the following functions.

What are the component parts of diversion head works?

Components of Diversion Head Works | Irrigation | Agriculture

• Component # 1. Weirs:
• Component # 3. Divide Wall:
• Component # 4. Fish Ladder:
• Component # 5. Log Chute:
• Component # 6. Main Canal Head Regulator:
• Component # 7. Regulation of Head Regulator:
• Component # 8. Silt Control at Head Regulator:

What is the main aim of mean water training?

What is the main aim of mean water training? Explanation: The aim of mean water training is to provide effective disposal of suspended and bed loads, and thus preserve the channel in good shape.

How many types of groynes are there?

There are about 6 types. In structural terms, one can distinguish between wooden groynes, rock groynes, sheet-pile groynes, concrete groynes and rubble- mound groynes and sand-filled bag groynes.

How many types of training of rivers are adopted?

Explanation: Generally seven methods are adopted for training rivers, which includes bank protection. These methods are namely; Levees, Guide Banks, Spurs, Artificial cut-offs, Pitched Islands, Miscellaneous Methods, and Pitching of Banks and provision of launching aprons.

What are the types of weir?

Types of Weirs

• Types of Weirs based on Shape of the Opening. Rectangular weir. Triangular weir. Trapezoidal weir.
• Types of Weirs based on Shape of the Crest. Sharp-crested weir. Broad- crested weir. Narrow-crested weir. Ogee-shaped weir.
• Types of weirs based on Effect of the sides on the emerging nappe.

Which is better weir or barrage?

A weir is an impermeable barrier that is built across a river to raise the water level on the upstream side. On the other hand, a barrage involves adjustable gates installed over a dam to maintain the water surface at different levels and at different times. The water level is adjusted by opening the valves or gates.

Diversion headworks is a structure constructed across a river for the purpose of raising the water level in the river so that it can be diverted into the off taking canals. It is also known as canal headworks and performs the following functions. It raises the water level on upstream side.

What is the name of the weir in diversion head works?

If ponding of water is achieved by shutters or gates then it is called barrage. It has low crest wall with high gates. The weir proper I constructed in the middle portion of diversion head works. At the ends under sluices are provided adjacent to the anal head regulators.

What are the different types of diversion works?

Silt regulation works The entry of silt into a canal, which takes off from a head works, can be reduced by constructed certain special works, called silt control works.These works may be classified into the following two types: (a) Silt Excluders (b) Silt Ejectors 24.

Where are the scouring sluices located on a diversion head?

The scouring sluices are located on the side of the weir on which head regulation of the canal, taking off from here, is located. If two canals are taking off on either side of the river two sets of under sluices should be located one on either side of the weir.