Role of Sediment in the Design and Management of Irrigation Canals
Language: English
Published by Taylor & Francis Group, 2010
- Softcover
- New
Seller: Majestic Books, Hounslow, United KingdomMajestic Books
AbeBooks seller since January 19, 2007
Condition: New
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- Title
- Role of Sediment in the Design and Management of Irrigation Canals
- Author
- Paudel Krishna P.
- Publisher
- Taylor & Francis Group
- Publication year
- 2010
- Condition
- New
- Binding
- Soft cover
- Language
- English
- ISBN 10
- 0415615798
- ISBN 13
- 9780415615792
- Series
- Book 49 of 150: IHE Delft PhD Thesis
The performance of irrigation schemes that carry sediment laden water is often poor. Modern irrigation schemes are increasingly demand based, which means that the water flow in the canals is determined by the crop water requirements. Accordingly the flow in the canal network is not constant as the crop water requirement changes with the climate and the growing stages. Also the inflow of the sediment is not constant throughout the irrigation season. Such schemes, particularly having unlined canals in alluvial soils, are difficult to design and to manage without compromising the flexibility or maintenance cost.
This research has made an in-depth assessment on the role of sediment in the design and management of an irrigation scheme by using the data of Sunsari Morang Irrigation Scheme, Nepal. An analysis of the velocity and shear stress distribution across a non-wide trapezoidal canal has been made to derive the correction factor for the sediment transport predictors. An improved approach based on a rational concept of the design of canals for sediment transport is proposed. By using the sediment transport model SETRIC, a water delivery plan has been designed and tested for changing water and sediment inflow conditions that can be implemented with the existing canal infrastructure.
The research also shows that flexibility of operation and efficient sediment management are difficult to achieve at the same time. A compromise has to be made and this needs to be reflected in the design. All methods to transport, exclude or extract the sediment are temporary measures and just transfer the problem from one place to the other. A better understanding of sediment movement helps to identify the problems beforehand and to find the best possible solutions.
"Synopsis" may belong to another edition of this title.
About the Author
Krishna P. Paudel graduated in civil engineering with honours from the University of Roorkee (now IIT Roorkee), India in 1989. In January 2004, he joined the Core Land and Water Development of UNESCO-IHE, the Netherlands as a PhD research fellow. His thesis entitled: "Role of Sediment in the design and management of irrigation canals: Sunsari Morang Irrigation Scheme, Nepal" has made an assessment of existing canal design methods from sediment transport perspective.
He has extensive experience in planning, design and management of irrigation and flood control works. Currently, Mr. Paudel is associated with CMS Nepal (Development Consultants) as Senior Water Resources Engineer and has been involved in the design as well as construction of different irrigation and water resource development projects. His field of interest are hydraulics, sediment transport and mathematical modelling."About the title" may belong to another edition of this title.
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