Experimental study on the bank erosion and interaction with near-bank bed evolution due to fluvial hydraulic force

Yu, Mao-Hong; Wei, Hongyan; Wu, Songbai

doi:10.1016/s1001-6279(15)60009-9

Cited by 43 publications

(18 citation statements)

References 18 publications

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“…The effects of soil properties on the process of riverbank failure have previously been discussed in [19,20,[22][23][24][25]30], which simulated this process at the same river water level. The riverbank in non-cohesive soil banks (mainly those comprising sandy soil) tends to fail near the water surface, whereas cohesive bank failure occurs near the bank toe, where the water velocity is much higher [23]. A series of simulations modeling the full processes of riverbank failure, depicting the regions both under and above the undercutting overhang were performed in [19,20].…”

Section: Effects Of Soil Erosion To Riverbank Stabilitymentioning

confidence: 99%

“…Regarding the factors affecting cantilever riverbank failure, the physical properties of the soil, particularly grain size and density, are the main factors affecting both the fluvial erosion rate and riverbank stability [19,20,[23][24][25]30]. Samadi et al (2011) [19] performed the first experiment involving the creation of an overhanging riverbank block to understand the failure mechanism of overhanging blocks.…”

Section: Introductionmentioning

confidence: 99%

“…By analyzing riverbank soils with different densities, Samadi et al (2011Samadi et al ( , 2013 [19,20] concluded that with increasing soil density, the undermining depth at which failure occurs will increase, as will the width ratio of upper to lower overhanging blocks in failure conditions. Yu et al (2015) [23] showed different mechanics of riverbank failure owing to different soil materials. For cohesive soil, as the sediment-moving incipient velocity is much greater than that of non-cohesive soil and its bed erosion is weaker, bank failure occurs deeper, near the bank toe.…”

Section: Introductionmentioning

confidence: 99%

“…From an overview of the previous research focused on soil erosion and riverbank failure by water flow stress, it may appear that soil properties are important factors impacting on soil erosion and riverbank failure [19,20,[23][24][25]30,[43][44][45][46][47][48][49][50][51][52][53][54][55][56]. However, few studies have focused on the effects of soil properties and erosion on riverbank cantilever failure.…”

Section: Introductionmentioning

confidence: 99%

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Riverbank Stability Assessment under River Water Level Changes and Hydraulic Erosion

Thi

Minh

2019

Water

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The dominant mechanism of riverbank cantilever failure is soil erosion of the bank toe and near bank zone. This paper demonstrates that the shape of the riverbank cantilever failure depends on the properties of the soil and the fluctuation of the river water level (RWL). With a stable RWL, a riverbank with higher resistance force leads to failure with larger and deeper overhang erosion width. When RWL rises, a less cohesive soil bank will be eroded over a larger width and riverbank failure will occur earlier. With a low rate of rising RWL, riverbank failure may happen in a type of mass failure. With a high rate of rising RWL, a riverbank will fail in a type of overhang riverbank failure, with the soil erosion rate being the main affected factor.

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Section: Effects Of Soil Erosion To Riverbank Stabilitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Riverbank Stability Assessment under River Water Level Changes and Hydraulic Erosion

Thi

Minh

2019

Water

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“…No bank failure occurs at bank angle smaller than critical value, a function of a dimensionless parameter which is proportional to the square of flow velocity near river bed and inversely proportional to the median diameter of bank materials. The critical angle reduces with flow velocity and is higher in meandering river than in straight river at the middle and lower reaches of Yangtze river (Yu et al, 2015). Conventional groynes and revetment were used to mitigate erosion in Bangladesh but it did not provide expected results that groyne modifications needed to improve its performance to stabilize bed topography at low flow and provide protection during high flood (Pizzuto and Meckelnburg, 1989).…”

Section: Bank Morphology At Restored Sitesmentioning

confidence: 99%

Application of ecohydraulic bank protection model to improve river bank stability and biotic community in Surabaya River

Rini

Arisoesilaningsih²,

Harisuseno³

et al. 2017

J.Degrade.Min.Land Manage.

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Ecohydraulic river bank protection design was developed as ECO-RIPRAP model and has been applied along 100 meter length to restore accelerated erosion sites in Surabaya River at Wringinanom and Klubuk. The model combined re-profiled and re-vegetated bank with rock toe reinforcement and addition of log groynes at 10 meter length interval. Various native plant species were planted on bank slopes, including water plants Ipomoea aquatica and Pistia stratiotes, grasses and shrubs Ipomoea carnea, Pluchea indica, Saccharum spontaneum, Arundo donax, and native tree species Ficus glomerata, Bambusa arundinacea, Dendrocalamus asper, Bambusa vulgaris, Ficus benjamina, Dillenia indica, Psidium guajava, Arthocarpus camansi, Arthocarpus elasticus, Hibiscus mutabilis, Nauclea sp.,Inocarpus edulis, and Syzygium polyanthum. The river bank morphology after ECO-RIPRAP application showed alteration from erosion to sedimentation due to rock toe enforcement, log groynes protection, and increase of plant cover on littoral banks that decreased near bank velocity. The macro-invertebrate community shown increase of taxa richness, EPT richness, %EPT and %Atyidae, but decrease of %Chironomidae at restored sites. The fish community shown increase of taxa richness, increase of abundance by 54.2%, increase of Pangasius micronemus abundance by 25.6%, and increase of Hemibragus nemurus abundance by 6.3 % at restored reach. Rare fish species thrive back at restored area, namely Oxyeleotris marmorata, Mastacembelus unicolor and Hampala macrolepidota. Keywords: macroinvertebrates, native fish, river bank protection, riparian habitat restorationTo cite this article: Rini, D.S., Arisoesilaningsih, E., Harisuseno, D. and Soemarno. 2017. Application of ECO-RIPRAP riverbank protection model to improve bank stability and to support biotic community in Surabaya River. J. Degrade. Min. Land Manage. 5(1): 975-986,

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The riverbank vegetation for mitigating the adverse effects of sediment dredging

Arora,

Kumar

2024

Ecohydrology

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Sediment dredging has been an ever‐growing issue, especially in developing nations with high demand for concrete filler material. River systems are adversely affected by sediment mining, resulting in decreased stability of the riverbed and riverbanks. Nature‐based solutions for riverbank erosion have been a research topic that has led to the proposal of vegetation on the riverbanks. However, little is known about the extent of riverbank vegetation required to negate the devastating effects of sediment mining because dense vegetation severely affects the flow structure and becomes a waste trap. This experimental study uses sparsely dense, flexible, and bladed vegetation to study the annulment effects of vegetation against the existing mining pit. Near‐bed turbulence and sediment transport have increased in the test section in the presence of a mining pit. The increase in near‐bed streamwise and transverse Reynolds shear stresses helped us understand the increased sediment movement in streamwise and lateral directions. The morphology of the test section showed increased riverbed erosion at the beginning of the test segment. The entire cross‐section was levelled at the end of the test section, and aggradation was downstream of the test segment. In contrast, in the vegetated riverbank case, the initial profile of the bank was almost unchanged for the same discharge of flow and upstream sand pit. The sparse vegetation overperformed the intended negation effects. This study establishes that sparse vegetation would perform better in maintaining the channel morphology, which otherwise in dense vegetation would have faced a high erosion rate in the main channel while giving the same protection to the riverbanks.

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Experimental study on the bank erosion and interaction with near-bank bed evolution due to fluvial hydraulic force

Cited by 43 publications

References 18 publications

Riverbank Stability Assessment under River Water Level Changes and Hydraulic Erosion

Riverbank Stability Assessment under River Water Level Changes and Hydraulic Erosion

Application of ecohydraulic bank protection model to improve river bank stability and biotic community in Surabaya River

The riverbank vegetation for mitigating the adverse effects of sediment dredging

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