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above video is of construction of water canal

in this video full construction of canal has been shown. 1. excavation of pit. 2. spreading of sheets to avoid water percolation. 3. lining of concrete with paver machine. 4. curing of concrete. after watching this video you will be able to understand how to construct canal or how to build canal. also you will see how to prepare sub grade. then how to lining the canal. the canal lining has done by using canal lining paver machine. concrete canvas channel lining.

according to the code : Lining of canals is an important feature of irrigation projects as it improves the flow characteristics and minimizes the loss of water due to seepage. The water thus saved can be utilized for the extension and improvement of irrigation. Lining of water courses in the areas irrigated by tube wells assumes special significance as the pumped water supply is relatively more costly. The reduced seepage also prevents rise of the sub-soil water table and thus reduces the possibility of damage to the adjoining areas by water logging. Further, due to adoption of higher velocities in a lined canal there is a saving in the cross-sectional area of the canal and land width required, with corresponding saving in the cost of excavation and masonry works. It helps in retention of shape of the canal. Lining also results in improvement of command and larger working head for power generation.

The functions of lining are:

a) Seepage control, b)

Prevention of water logging,

c) Increased hydraulic efficiency,

d) Increased resistance to erosion/abraison,

e) Reduction in cross-section area and consequential smaller structures,

J) Low operation and maintenance cost.

The following are the important requirements for the selection of type of canal lining:

a) Economy;

b) Structural stability;

c) Strength and durability;

d) Repairability and easy maintenance;