Impact of Improved Operation and Maintenance on Cohesive Sediment Transport in Gezira Scheme, Sudan

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Ishraga S. Osman

Impact of Improved Operation and Maintenance on Cohesive Sediment Transport in Gezira Scheme, Sudan

Ishraga S. Osman

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English

CRC Press
29 October 2015

Irrigation

Series: IHE Delft PhD Thesis Series

Irrigated agriculture remains to be the main option to boost the economy in Sudan in general. It can rise the living standard of the majority of the population; particularly those who are attached to farming and livestock. With the expected increase in population in the next decades, water management of large irrigation systems will become a key issue to increase productivity and assure future food security.

Sediment transport in irrigation canals makes water management very complicated. This study focuses on water management in Gezira Scheme, Sudan. This scheme is irrigated from the Blue Nile River, which is characterized by a high sediment concentration. The aim of the study was to reduce the impact of fine sediment deposition in irrigation canals by improving the operation and maintenance procedures. A numerical model has been developed to simulate the cohesive sediment transport in irrigation canals. This model is a useful tool for the operators and decision makers to assess different options of operation in terms of sediment transport. This study found that sediment deposition in the canals can be minimized if the operation based on crop water requirement is adjusted at a certain period during the flood season.

By: Ishraga S. Osman
Imprint: CRC Press
Country of Publication: United Kingdom
Dimensions: Height: 240mm, Width: 170mm,
Weight: 408g
ISBN: 9781138028807
ISBN 10: 1138028800
Series: IHE Delft PhD Thesis Series
Pages: 200
Publication Date: 29 October 2015
Audience: College/higher education , Further / Higher Education
Format: Paperback
Publisher's Status: Active

Cohesive sediment transport Sediment transport under non equilibrium conditions Overview of cohesive sediment transport models Data collection and scheme analysis Water level measurement Flow measurement and calibration of measuring structures Numerical model development Effect of sediment on the hydrodynamic behaviour of irrigation canals Effect of different operation scenarios on the sedimentation Sediment management

"Ishraga S. Osman is a lecturer at the Civil Engineering Department, University of Khartoum, Sudan. She worked as researcher at the UNESCO Chair in Water Resources, Sudan, from 2003 till 2009. She is engaged in a number of projects and became a member of the River Morphology Cluster of the Nile Basin Capacity Building Network. She is involved in the ""Nile Basin Reservoir Sedimentation Prediction and Mitigation project"" in addition to several studies related to water management in irrigation canals, assessment of irrigation performance and sediment transport studies. She engaged in teaching, research, consultancy and supervision of BSc theses"