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 : Combined Effect of Seepage Erosion and Fluvial Entrainment on Streambank Failure: A Laboratory and N...
Combined Effect of Seepage Erosion and Fluvial Entrainment on Streambank Failure: A Laboratory and Numerical Study
Author : Yefei Tan, Jun Lu, Xinghua Xie, Siqiang Wu, Bo Ning and Jun Yan
In this paper, A cohesionless sand slope was constructed with the presences of both front fluvial flow and lateral seepage. Five linear displacement sensors were attached to the middle line of the slope surface and mounted on the upper rail to monitor the deformation of the slope. The interaction effects caused by surficial and subsurface flows were studied by coupling Darcy, Brinkman and N avier-Stokes equations. Results showed that a high fluvial velocity had a significant effect on the increase of pore-water pressure near the slope surface, and the direction of maximum seepage force as well, therefore, sand particles were easier to be removed and resulted in a less safe streambank. We also found that the direction-changed seepage helped the widening process in the downstream area and the failure intensity is exponentially related to the fluvial velocity for a constant seepage condition.
File Size : 1,250,282 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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