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Estimation of Suspended-Sediment Inflow Concentration at Irrigation Intake during Rainstorms
|Contributors: ||NTOU:Department of Harbor and River Engineering|
Soil Erosion;Sediment Concentration;Instantaneous Unit Sediment Graph
|Issue Date: ||2011-06-29T01:38:39Z
abstract:Concentrated rainfall fallen on steep hillslope usually results in serious soil erosion. It is hard to estimate sediment concentration at irrigation intake because the itinerary of the eroded sediment is complicated and temporal sediment concentration measured data is seldom. In this study, an instantaneous unit sediment graph model will be developed based on soil erosion theory and geomorphologic instantaneous unit hydrograph theory. By using watershed geomorphologic information and soil data, sediment concentration can be obtained by convoluting the rainfall with the proposed instantaneous unit sediment graph. In this study, geomorphologic and hydrological data in the study watershed will be collected. A digital elevation model will be adopted to obtain the watershed geomorphic factors for subsequent runoff routing and sediment concentration estimation. It is hope that the proposed model can be applied for estimating the sediment concentration at irrigation intake during rainstorms for subsequently agricultural water resources design work.
|Appears in Collections:||[河海工程學系] 研究計畫|
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