Commenced in January 2007
Paper Count: 30172
Sensitivity of the SHARC Model to Variations of Manning Coefficient and Effect of “n“ on the Sediment Materials Entry into the Eastern Water intake- A Case in the Dez Diversion Weir in Iran
Abstract:Permanent rivers are the main sources of renewable water supply for the croplands under the irrigation and drainage schemes. They are also the major source of sediment loads transport into the storage reservoirs of the hydro-electrical dams, diversion weirs and regulating dams. Sedimentation process results from soil erosion which is related to poor watershed management and human intervention ion in the hydraulic regime of the rivers. These could change the hydraulic behavior and as such, leads to riverbed and river bank scouring, the consequences of which would be sediment load transport into the dams and therefore reducing the flow discharge in water intakes. The present paper investigate sedimentation process by varying the Manning coefficient "n" by using the SHARC software along the watercourse in the Dez River. Results indicated that the optimum "n" within that river range is 0.0315 at which quantity minimum sediment loads are transported into the Eastern intake. Comparison of the model results with those obtained by those from the SSIIM software within the same river reach showed a very close proximity between them. This suggests a relative accuracy with which the model can simulate the hydraulic flow characteristics and therefore its suitability as a powerful analytical tool for project feasibility studies and project implementation.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1060251Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1271
. Improving The Performance Of Water Delivery In The Dez & Moghan Irrigation Schemes In Iran, PhD Thesis , Cranfield University , UK(2005).
 Operation and Maintenance of the North Khuzestan Irrigation and Drainage Company (2009). KWAPA, Dezful, Iran.
 Department for International Development
. "Sediment and Hydraulic Analysis for Rehabilitation of Canals, "Software Manual, H.R Wallingford, UK.
. Investigating the sedimentaatio process in settling basin in irrigation netwrok of the Imam Khomeini agro-complex, MSc Dissertation, Chamran University, Iran.
 Chadwick ,A
. Hudraulics in civil environmental engineering ,3rd translated by Mashal, M, Tehran University Press
 Shafaaee Bejestan,M
. Sedimntation Hydraulics, first Edition, University Of Chamran, Iran
. Investigating the challenges of the water intake in Diversion weirs and means of overcoming them-Case study in Dez Diversion Dam In Dezful, Iran. MSc Dissertation, Khajeh Nasiradin University, Tehran, Iran.Toosi.
 Ashkaria, S, Kiamanesh, H, and Hedayat, N
. Simulation of the flow pattern using Flow 3D software- a case study in the Dez diversion Weir in Dezful, Iran. Proceedings: National Conference in water, soil, palnt and mechanisation , Islamic Azad University, Dezful, Iran.
 Shirin,H, Hedayat, N, and kiamanesh ,
. Analytical investigation of the sedimientaion process and their underlying cause- a case study in the Dez Diversion Weir in Dezful, Iran. Proceedings: National Conference in water, soil, palnt and mechanisation , Islamic Azad University, Dezful, Iran.
 Mansoujian, M.R
. Crtiical iinvestigation of the sedimentation processes in the water intakes using the SHARC software- A case study of the Eastern Intake structure in Dezful. MSc dissertation, I.azad University, Dezful, Iran.
 Najmaee, M
. Applied hydraulics, 1st edition, Elmosanat University Press, Tehran, Iran.
 Shirin, H
. Investigating the sedimientaion process and their underlying cause- A case study in the Dez Diversion Weir in Dezful, Iran. M.Sc dessertation, Islamic Azad University, Dezful, Iran.
 Ahwazin, H
. Numerical model of dez diversion Dam in Dezful, Iran. M.Sc dessertation, Islamic Azad University, Dezful, Iran.