Performance Assessment of Diversion Headwork Implemented for Irrigation (Case Study on Fantale Irrigation Based Integrated Development Project)
| dc.contributor.advisor | Kemal, Asie(PhD) | |
| dc.contributor.author | Fikru., Henok | |
| dc.date.accessioned | 2018-07-23T08:37:55Z | |
| dc.date.accessioned | 2023-11-11T08:32:45Z | |
| dc.date.available | 2018-07-23T08:37:55Z | |
| dc.date.available | 2023-11-11T08:32:45Z | |
| dc.date.issued | 2016 | |
| dc.description.abstract | Many diversion head-works for irrigation have been designed and constructed in the preceding years. Some of them are performing successfully, but it has been observed in various reports that some of the schemes have failed to serve the purpose for which they are designed. Therefore it is important to deal with the performance assessment of diversion head works implemented for irrigation. A case study on Fantale diversion head-work carried out for this research work and attempt is made to understand the hydraulic and structural problems encountered. This serve for different purposes such as for construction of new diversion structure (either as replacement for existing structures, or as an entirely new structure), rehabilitation of existing structures (from minor repairs to complete re-engineering either to maintain existing function, or to meet new requirements) decommissioning of the structures. Surveying data at the head-work cross section and other supporting data’s were used to estimate the amount of sediment deposition. The analyses of the data’s shows that there is a clear reduction of flow area or opening size at the canal head regulator. The main factors that caused below performance of Fantale diversion head-work are sedimentation and formation of shoals upstream of both under-sluice and weir component, selection of diversion structure type, malfunctioning of gates, seepage under the weir and the under-sluice, reduced opening size at the canal head regulator, failure to flush sediment regularly, entry of silt in to the canal. Key words: Analysis, Diversion, Downstream, Gates, Head work, Regulator, Scour, Seepage, Silt, Stability, Upstream, Under-sluice, Weir. | en_US |
| dc.identifier.uri | http://etd.aau.edu.et/handle/12345678/9762 | |
| dc.language.iso | en | en_US |
| dc.publisher | Addis Ababa University | en_US |
| dc.subject | Analysis | en_US |
| dc.subject | Diversion | en_US |
| dc.subject | Downstream | en_US |
| dc.subject | Gates | en_US |
| dc.subject | Head work | en_US |
| dc.subject | Regulator | en_US |
| dc.subject | Scour | en_US |
| dc.subject | Seepage | en_US |
| dc.subject | Silt | en_US |
| dc.subject | Stability | en_US |
| dc.subject | Upstream | en_US |
| dc.subject | Under-sluice | en_US |
| dc.subject | Weir | en_US |
| dc.title | Performance Assessment of Diversion Headwork Implemented for Irrigation (Case Study on Fantale Irrigation Based Integrated Development Project) | en_US |
| dc.type | Thesis | en_US |