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Article

Experimental Design of Nature-Based-Solution Considering the Interactions between Submerged Vegetation and Pile Group on the Structure of the River Flow on Sand Beds

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Water Engineering Department, Sari Agricultural Sciences and Natural Resources University, Sari 4818168984, Iran
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Water Engineering Department, Isfahan University of Technology, Isfahan 8415683111, Iran
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Departamento de Análisis Geográfico Regional y Geografía Física, Facultad de Filosofía y Letras, Campus Universitario de Cartuja, Universidad de Granada, 18071 Granada, Spain
*
Authors to whom correspondence should be addressed.
Academic Editor: Gordon Huang
Water 2022, 14(15), 2382; https://doi.org/10.3390/w14152382
Received: 4 July 2022 / Revised: 26 July 2022 / Accepted: 29 July 2022 / Published: 1 August 2022
(This article belongs to the Special Issue Feature Papers of Water-Energy Nexus)
Designing correct engineering infrastructures to reduce land degradation processes and considering natural elements to achieve this goal are key to correctly managing potential natural hazards affecting human activities and natural ecosystems. This research investigated the scour depth and velocity vectors around bridge piles with and without upstream vegetation protection. A Doppler velocity meter was used to measure velocity components in a channel 90 cm wide, 16 m long, and 60 cm high. Variable parameters were the number of bridge piles, the height, density, and width of vegetation upstream, as well as the distance between bridge piles. Using a triple pile group with a distance between piles of 10 cm and overall vegetation across the channel, the depth of the scour hole upstream of the first pile decreased by 40% compared to the single pile with no vegetation. This result shows the significant impact of using vegetation and pile groups to reduce scour around piles. Lower vertical velocity gradients, more consistent velocity vectors, reducing the downstream flow range, and restraining horseshoe vortexes and wake vortices were observed in utilizing vegetation. We confirmed that vegetation is an essential factor in changing the flow, transportation of sediment, and conserving ecological services in rivers. View Full-Text
Keywords: river ecosystems; scouring; sedimentation; nature-based solutions; shear stress; hydraulic structure river ecosystems; scouring; sedimentation; nature-based solutions; shear stress; hydraulic structure
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MDPI and ACS Style

Miyab, N.M.; Fazloula, R.; Heidarpour, M.; Kavian, A.; Rodrigo-Comino, J. Experimental Design of Nature-Based-Solution Considering the Interactions between Submerged Vegetation and Pile Group on the Structure of the River Flow on Sand Beds. Water 2022, 14, 2382. https://doi.org/10.3390/w14152382

AMA Style

Miyab NM, Fazloula R, Heidarpour M, Kavian A, Rodrigo-Comino J. Experimental Design of Nature-Based-Solution Considering the Interactions between Submerged Vegetation and Pile Group on the Structure of the River Flow on Sand Beds. Water. 2022; 14(15):2382. https://doi.org/10.3390/w14152382

Chicago/Turabian Style

Miyab, Nazanin Mohammadzade, Ramin Fazloula, Manouchehr Heidarpour, Ataollah Kavian, and Jesús Rodrigo-Comino. 2022. "Experimental Design of Nature-Based-Solution Considering the Interactions between Submerged Vegetation and Pile Group on the Structure of the River Flow on Sand Beds" Water 14, no. 15: 2382. https://doi.org/10.3390/w14152382

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