Assessment of the erodibility of fine/coarse sediment mixtures

Author(s):  
H. Torfs ◽  
J. Jiang ◽  
A.J. Mehta
2016 ◽  
Author(s):  
Nyle Major Weldon ◽  
◽  
Ray J. Weldon ◽  
Win N.F. McLaughlin ◽  
Samantha S.B. Hopkins ◽  
...  

Water ◽  
2021 ◽  
Vol 13 (13) ◽  
pp. 1865
Author(s):  
Leonardo Schippa

When dealing with natural geo–hazards, it is important to understand the influence of sediment sorting on debris flows. The presence of coarse fraction is one of the aspects which affects the rheological behaviour of natural viscous granular fluid mixtures. In this paper, experiments on reconstituted debris flow mixtures with different coarse–to–fine sediment ratios are considered. Such mixtures behave just as non–Newtonian yield stress fluids and their rheological behaviour is largely affected by the presence of coarse fraction. Experimental results demonstrate that yield stress is very sensitive not only to bulk sediment concentration but also to coarse sediment fraction. A novel yield stress model is presented. It accounts for an empirical grading function depending on the coarse–to–fine grain content. The yield stress model performed satisfactorily in comparison with the experiments, showing that it is almost independent of the coarse–to–fine grain fraction in case of dominant coarse sediment content.


2013 ◽  
Vol 28 (4) ◽  
pp. 448-457 ◽  
Author(s):  
Jia-hong LIU ◽  
Guang-qian WANG ◽  
Hai-hong LI ◽  
Jia-guo GONG ◽  
Jing-yi HAN

1986 ◽  
Vol 112 (11) ◽  
pp. 1019-1034 ◽  
Author(s):  
Belle R. Samaga ◽  
Kittur G. Ranga Raju ◽  
Ramchandra J. Garde

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