IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 35th IAHR Congress - Chengdu (2013) : THEME 5 - FLUVIAL HYDRAULICS AND RIVER MANAGEMENT : Analysis for River Channel Processes Due to the Typical Bank Collapse in the Upper Yellow River Base...
Analysis for River Channel Processes Due to the Typical Bank Collapse in the Upper Yellow River Based on GIS Method
Author : Shu Anping, Gao Jing, You Wei and Li Fanghua
Bank collapse refers to the avalanche of bank material due to the basal erosion by hy drodynamic action, and results in substantial losses of farmland and nearby settlements, destruction of base facilities and deposition of river channel. Correspondingly, it has been paid great attentions that bank collapse brings about river channel processes and exerts adverse influence on land use and floods control engineering. There is lots of severe bank collapse in the upper Yellow River during flood, of which the t ypical representative is bank collapse at Dengkou reach (DK reach). By Landsat TM data from 2006 to 2010 and topographic maps of 1958 derived from aerial photos, river channel processes of erosion and accretion due to bank collapse at DK reach from 2006 to 2010 were analyzed preliminarily. The area of the processes was determined by comparing sequential changes at the position of the river boundary for these years based on Arcgis method. The results showed that the total area of river boundary retreat and ad vance from 2006 to 2010 equaled 742.25 ha and 708.71 ha respectively, and the river regime changed significantly with remarkable swing of mainstream and cross of both sides, because of serious bank collapse by specific bank composition properties, and flow discharge change at DK reach, and the sediment transport of bank collapse materials exhibits the law of that sediment transport from concave reach to convex reach is much more than that from convex reach to convex reach. Thus, this study has a vital referential significance for the management of the whole Yellow river and contributes to the development of desert river dynamics.
File Size : 690,543 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 35th IAHR Congress - Chengdu (2013)
Article : THEME 5 - FLUVIAL HYDRAULICS AND RIVER MANAGEMENT
Date Published : 18/07/2016
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