The document discusses canal lining, which involves providing an impervious layer along the bed and sides of a canal. This increases the life, discharge, and efficiency of the channel. The main types of lining discussed are precast concrete, brick, and stone block lining. The advantages are preventing seepage, waterlogging, increasing capacity and channel life. The disadvantages include high initial costs and difficulty repairing damage. The document evaluates factors like economy, durability in selecting the appropriate lining type.

2.  Definition
 Types of lining
 Advantages of lining
 Disadvantage of lining
 Selection of type of lining

3. An impervious layer which is provided at
the bed and sides of the canal to
increase the life, discharge and
hydraulic efficiency of the channel is
known as Lining.
**An artificial channel filled with water and designed for navigation ,
or for Irrigating land. **

4. • SEEPAGE CONTROL
• PREVENTION OF WATER LOGGING
• INCREASED HYDRAULIC EFFICIENCY
• INCREASED RESISTANCE TO
• EROSION/ABRASION
• REDUCTION IN CROSS SECTION AREA
• SMALLER STRUCTURES
• LOW OPERATION AND MAINTENANCE COST.

5. • ECONOMY
• SRUCTURAL STABILITY
• STRENGTH AND DURABILITY
• REPAIRABILITY AND EASY MAINTENANCE
• MAXIMUM HYDRAULIC EFFICIENCY
• IMPERMEABILITY
• RESISTANCE TO EROSION
• ABILITY TO PREVENT WEED GROWTH
• RESISTANCE AGAINST BURROWING
• ANIMALS
• REASONABLE FLEXIBILITY

7. • STONE PITCHED LINING
• BURNT CLAY TILE/BRICK LINING
• PRECAST CEMENT CONCRETE
• IN-SITU CEMNT CONCRETE LINING
• STONE MASONRY LINING
• SOIL CEMENT LINING
• SHOTCRETE LINING
• ASPHALTIC CEMENT/CONCRETE LINING

8. • Cement concrete Lining
• Precast concrete Lining
• Cement Mortar Lining
• Brick Lining / Burnt Tile Lining
• Stone blocks / Undressed stone
Lining
• Asphaltic Lining
• Buried Membrane Lining

9. • Soil cement Lining
• Clay puddle Lining
• Sodium carbonate Lining.

10. • PRECAST CONCRETE LINING

11. BRICK LINING

12. • STONE BLOCK LINING

13. 1. Prevents water seepage through surface of the
canal.
2. Helps in preventing Water-Logging.
3. Increases discharge carrying capacity of the
channel.
4. Increases channel life and reduce the maintenance
cost.
5. Increases Gross area under cultivation.
6. Silting is prevented as velocity is increased.
7. Prevents or Reduces Weed Growth.
8. Increase available head for power generation due to
flatter gradient.

14. • Heavy initial investment is required.
• Difficult to shift the outlets as lining is permanent.
• Difficult to repair the damaged lining.
• Berm is absent in Lined channels , so safety to vehicular
and pedestrian traffic gets reduced.