Volume 7, Issue 2 (3-2014)
2014, 7(2): 1833-1846 |
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Salamat ravandi H, Kharazi Fard M, Majdzadeh Tabatabaee M. Estimation of scour hole length resulted from river bank erosion based on the experimental data. Journal of Engineering Geology 2014; 7 (2) :1833-1846
URL: http://jeg.khu.ac.ir/article-1-413-en.html
URL: http://jeg.khu.ac.ir/article-1-413-en.html
1- , mrmtabatabai@pwut.ac.ir
Abstract: (7034 Views)
River bank erosion is a mechanism initiated by soil particles movement due to subsurface flow. This may occur in a soil texture at a critical hydraulic gradient. With regard to the complexity of river bank erosion processes and limited research in this field, it is of significance to investigate and to identify the effective parameters. In the present study, a physical model of a river bank was developed to achieve in-depth understanding of the effects of bank material particle sizes on porous media under various hydraulic gradients. It is concluded that the length of scour hole caused by seepage erosion may depend on the hydraulic gradients as well as Reynolds number. Further, two empirical relationships are derived on the basis of observed experimental results to estimate scour hole length resulted from river bank erosion for laminar and turbulent conditions
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