50. Lining of Canals – Types of Lining – Advantages and Disadvantages
Canal lining is a critical process aimed at reducing water seepage and enhancing hydraulic efficiency in man-made canal systems. The chapter discusses various types of canal linings, including rigid, flexible, and composite options, each with specific advantages and disadvantages. It emphasizes the importance of selecting appropriate lining materials based on factors like soil conditions, cost, and environmental impact, while also outlining the advantages and potential maintenance challenges associated with lined canals.
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50.2.2.cPlastic Membrane Lining (Ldpe, Hdpe, Pvc)
What we have learnt
- Canal lining reduces seepage losses and improves water use efficiency.
- Various types of canal linings exist, including rigid and flexible options, each with unique properties.
- Several factors must be considered when selecting a canal lining type, including soil characteristics, hydraulic requirements, and cost.
Key Concepts
- -- Canal Lining
- The process of providing a protective impermeable layer on the bed and sides of a canal to reduce water loss through seepage.
- -- Rigid Linings
- Lining types made from hard materials like concrete or brick, which are structurally stable but less flexible.
- -- Flexible Linings
- Lining types that can adjust to minor soil movements, often used in low-budget or temporary canal projects.
- -- Composite Linings
- Hybrid linings that combine two or more materials for optimized performance and adaptability.
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