Civil Engineering - Irrigation - Discussion

Any hydraulic structure which supplies water to the off taking canal. Diversion head-work provides an obstruction across a river, so that the water level is raised and water is diverted to the channel at required level. The increase water level helps the flow of water by gravity and results in increasing the commanded area and reducing the water fluctuations in the river.

Diversion head-work may serve as silt regulator into the channel. Due to the obstruction, the velocity of the river decreases and silt settles at the bed. Clear water with permissible percentage of silt is allowed to flow through the regulator into the channel.

To prevent the direct transfer of flood water into the channel.

Functions of a Headwork.
A headwork serves the following purposes.

A headwork raises the water level in the river.
It regulates the intake of water into the canal.
It also controls the entry of silt into the canal.
A headwork can also store water for small periods of time.
Reduces fluctuations in the level of supply in river.

A head work serves the following purposes:

A head work raises the water level in the river.
It regulates the intake of water into the canal.
It also controls the entry of silt into the canal.
A head work can also store water for small periods of time.
Reduces fluctuations in the level of supply in river.

According to R S Khurrmi:

Definition of the head work is that, they are used to Raise the water level at the head of the canal. This is the main function of the head.

So the given Answer is 100% correct.

D is the right answer as the main function of divergent head work is to raise the water level. Others are general functions but the main function is to raise the head.

@All.

As the question is about the main function of diversion headwork so, the answer may be option 'B'.

I think E is the correct answer because all are the function of diversion head works.

What is the reason to choose B in my opinion the answer for this question is "E".

They asked for main function not all function. So, the Answer D is correct.

All are correct but only D is a primary function hence D is correct.

All are right but D is the main function so D is right.