Sensitivity of River Sediment Transport Changing Conditions

Document Type

Conference Proceeding

Publication Date

5-14-2020

Department

Department of Civil, Environmental, and Geospatial Engineering

Abstract

Sediment transport has implications for activities such as fishing, flood control, scour countermeasures, and dredging through altered flow depths and sediment transport, bank erosion, and bridge scour. To estimate the changes in sediment transport to river discharge, water surface slope, and tailwater depth (to simulate sea-level rise) were altered in an existing sediment transport model. It was found that: (1) in uniform flow upstream of sea-level rise effects, sediment transport is sensitive to discharge; (2) in non-uniform flow affected by sea-level rise, sediment transport is sensitive to water surface slope and discharge; (3) the discharge value to restore the sediment transport rate existing before sea-level rise is proportional to the water surface slope ratio to the 4th power; and (4) the discharge value to restore the bed sediment size existing before sea-level rise is proportional to the water surface slope ratio to the 3/4th power. These relationships can be used for future application and planning purposes.

Publisher's Statement

© 2020 American Society of Civil Engineers. Publisher’s version of record: https://doi.org/10.1061/9780784482971.020

Publication Title

World Environmental and Water Resources Congress 2020: Hydraulics, Waterways, and Water Distribution Systems Analysis - Selected Papers from the Proceedings of the World Environmental and Water Resources Congress 2020

ISBN

9780784482971

Link to Full Text

Share

COinS