Contribution to runoff erosion of earthen channels
Languages of publication
The purpose of the experimental study is to investigate the effect of earthen channel geometry on erosion by runoff. After the construction of an experimental setup, four geometric shapes were tested; the circle, the triangle, the sinus and the trapeze. These four forms were dug in agricultural sandy-loam soil. For all experiments, and for each geometric shape, discharge, slope inclination, time, and slope length were varied. Experimental results have shown that the geometry of earthen channels plays an important role in sedimentary dynamics. In addition, it was noted that for slopes less than 20%, the sinusoidal geometric shape allowed to have the minimum of sediment exported. For upper slopes, the minimum amount of soil exported, was obtained with the triangle. The analysis of the experimental results allowed us to see that the variation of the mass of soil exported as a function of the discharge, the slope inclination, the time and the slope length, followed power functions with respective exponents of 2.49, 0.88, -1.27, and -1.53.
21 - 12 - 2018
-  Chanson, H., 2004. The Hydraulics of Open Channel Flow: An Introduction. Elsevier Butterworth Heinemann, Oxford.
-  Depeweg, H. et al., 2015. Sediment Transport in Irrigation Canals: A New Approach. CRC Press Balkema, EH Leiden.
-  Dey, S., 2014. Fluvial Hydrodynamics, GeoPlanet: Earth and Planetary Sciences. Springer-Verlag, Berlin–Heidelberg.
-  Elkholy, M. et al., 2015. Effect of soil composition on piping erosion of earthen levees. Journal of Hydraulic Research, 53(4): 1–10.
-  Gupta, S.K. et al., 2016. Design of minimum cost earthen channels having side slopes riveted with different types of riprap stones and unlined bed by using particle swarm optimization. Irrigation and Drainage, 65(3): 319–333.
-  Haddad, S., Bouhadef, M., 2012. Inflence of the geometrical shape of agricultural furrow on the sediment transport. International Journal of Engineering Science and Technology, 4(5): 1842–1849.
-  Jahn, R. et al., 2006. Guidelines for Soil Description. FAO, Rome, Italy.
-  Julien, P.Y., 2002. River Mechanics. Cambridge University Press, New York.
-  Khodashenas, S.R., et al., 2008. Boundary shear stress in open channel flow: A comparison among six methods. Journal of Hydraulic Research, 46(5): 598–609.
-  Partheniades, E., 2009. Cohesive Sediment in Open Channels. Butterworth-Heinemann, USA.
-  Roose, E., 1996. Land Husbandry – Components and Strategy. 70 FAO Soils Bulletin, Food and Agriculture Organization of the United Nations, Rome.
-  Römkens, M.J.M. et al., 2001. Soil erosion under different rainfall intensities, surface roughness, and soil water regimes. CATENA, 46: 103–123.
-  Saleh, T., 2017. Surface Irrigation Systems. Oklahoma Cooperative Extension Service, BAE-1527. Division of Agricultural Sciences and Natural Resources, Oklahoma State University.
-  United States Department of the Interior (USDI), 2001. Water Measurement Manual. A Water Resources Technical Publication. Water Resources Research Laboratory.
-  Zhu, Y. et al., 2008. Research on cohesive sediment erosion by flow: An overview. Science in China Series E: Technological Sciences, 51(11): 1–12.
Publication order reference