Volume 15 Issue 2
Jun.  2022
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Amin Ghassemi, Mohsen Nasrabadi, Mohammad Hossein Omid, Ali Raeesi Estabragh. 2022: Effect of synthetic fibers on resisting scour caused by horizontal jet. Water Science and Engineering, 15(2): 152-160. doi: 10.1016/j.wse.2022.03.001
Citation: Amin Ghassemi, Mohsen Nasrabadi, Mohammad Hossein Omid, Ali Raeesi Estabragh. 2022: Effect of synthetic fibers on resisting scour caused by horizontal jet. Water Science and Engineering, 15(2): 152-160. doi: 10.1016/j.wse.2022.03.001
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Effect of synthetic fibers on resisting scour caused by horizontal jet

doi: 10.1016/j.wse.2022.03.001

  • a. Department of Civil Engineering, Queen's University, Kingston K7L 3N6, Canada.;

  • b Department of Water Science and Engineering, Arak University, Arak 38481-77584, Iran;

  • c Department of Irrigation and Reclamation Engineering, University of Tehran, Karaj 31587-77871, Iran

  • Received Date: 2021-08-21
  • Accepted Date: 2022-01-01
  • Rev Recd Date: 2022-01-01
    • Available Online: 2022-06-21
    Abstract
  • Given that the development of scour downstream of hydraulic structures increases the risk of structural damage, it is important to find costeffective and environmental approaches to reduce this risk. This study aimed to experimentally evaluate the effect of synthetic fibers on the scour profile downstream of a sluice gate with a rigid apron. Experiments were performed with the same Froude number and with different weight percentages of synthetic fibers on both non-cohesive and cohesive sediments. One uniform sand was used as the non-cohesive sediment, and three different cohesive sediments were prepared by mixing different percentages of kaolinite soil with the used sand. The scouring experiments showed that the presence of synthetic fibers did not considerably affect the scour hole dimension in non-cohesive sediments. Evaluation of the scour in the cohesive sediments in silty sand (SM) texture found that an increase in the percentage of silt reduced the scour hole dimensions. The effect of synthetic fibers on scour of SM-texture-based sediments was also investigated, and the results showed that increasing the percentage of synthetic fibers decreased the scour hole dimensions. In addition, the cohesive sediments in SM texture did not have a similar non-dimensional scour profile, and the presence of synthetic fibers did not significantly affect the scour hole.

     

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