A New Approach to Sediment Transport in the Design and Operation of Irrigation Canals: Unesco-Ihe Lecture Note Series

ISBN-13: 9780415430654 / Angielski / Miękka / 2007 / 240 str.

Herman Depeweg; Nestor Mendez V.

Opis

The transport of sediment greatly influences the sustainability of an irrigation system. Erosion and deposition not only increase maintenance costs, but may result in an inequitable and inadequate distribution of irrigation water. Understanding the behaviour and transport of sediment allows efficient planning and reliable water delivery schedules, and ensures the controlled deposition of sediments, making maintenance activities more manageable. These lecture notes present a detailed analysis of sediment transport in irrigation canals, together with physical and mathematical descriptions of the behaviour. A mathematical model predicts the sediment transport, deposition and entrainment rate for various flow conditions and sediment inputs. The model is particularly suitable for the simulation of sediment transport in irrigation canals where flow and sediment transport are largely determined by the operation of flow control structures.

Spis treści

1. Introduction  2. Open Channel Flow  3. Sediment Properties  4. Design Criteria for Irrigation Canals  5. Sediment Transport Concepts  6. SETRIC, A Mathematical Model for Sediment Transport in Irrigation Canals  7. The Sediment Transport Model and its Applications  References  List of Symbols  Appendix A: Methods for Estimating the Total Sediment Transport Capacity in Irrigation Canals  Appendix B: Methods to Predict the Friction Fraction  Appendix C: Hydraulic Design of Irrigation Canals  Appendix D: Description of the Main Aspects of the Regime Theory  Appendix E: Glossary  Index