Topic
River engineering
About: River engineering is a research topic. Over the lifetime, 435 publications have been published within this topic receiving 10286 citations. The topic is also known as: Channelisation.
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TL;DR: The use of reliable stage-discharge curves is one of the most important issues in the management of water resources and river engineering as mentioned in this paper, which is the case in many natural rivers.
Abstract: The use of reliable stage-discharge curves is one of the most important issues in the management of water resources and river engineering. Discharge measurement in natural rivers is general...
2 citations
TL;DR: In this article, a pilot study was carried out for the slope design of rivers which took into consideration both slope stability and frog ecology, and the results showed that the climbing abilities of frogs on cobblestone are much better than on other materials.
Abstract: A pilot study was carried out for the slope design of rivers which took into consideration both slope stability and frog ecology. Ecological engineering is defined as the design of sustainable ecosystems for the integration of human society with its natural environment for the benefit of both. In river engineering projects, the retaining banks and the river bottom are usually constructed of concrete. Although strong, there are no river-like crevices in these structures that can provide habitats, thus organisms are more vulnerable to predation by natural enemies. Ecological river engineering follows the laws of nature and takes into consideration river diversity and sustainable development. It also takes into consideration ecological and safety factors to create river ecosystems and habitats that are diverse, with a reduced impact on the natural environment. So far, there have been no related cross-subject studies on both the needs of amphibians and the slope stability of river banks. In this study, we attempt to increase our understanding and offer insights into current practices in ecological river slope engineering. The research purposes of this study were to examine (1) the climbing abilities of frogs on various degrees of slope and materials and (2) the failure mechanism of the selected slopes using the finite element method (FEM); and carry out (3) safety analysis using the FEM for the selected slopes, and (4) correlation analysis between the climbing abilities of frogs and the safety factors of slopes. The results show that the climbing abilities of frogs on cobblestone are much better than on other materials. Therefore, when considering the survival needs of frogs, the use of rocky revetment should be encouraged for use on ecological slopes. Our results should enhance knowledge relevant to ecologists and engineers for the creation of safe river slopes that also meet the ecological needs of amphibians.
2 citations
12 May 2021
TL;DR: In this article, the authors studied the development of the Ohře River near Žatec between the Late Glacial Maximum (LGM) and present time to obtain its natural trajectory and thus to understand the role of human impact on floodplain development.
Abstract: The development of the Ohře River near Žatec between the Late Glacial Maximum (LGM) and present time was studied to obtain its natural trajectory and thus to understand the role of human impact on floodplain development. The study was based on geomorphic research, sampling and dating fluvial sediments by optically stimulated luminescence (OSL) and anthropogenic contamination by Sn since 16th century. During the LGM and the Pleistocene/Holocene transition (P/H), the river valley was shaped by large, incising meanders creating the entire valley floor. The Holocene river, due to decreased channel forming discharges, only slowly continued the LGM and P/H trajectory by cut-offs of the large palaeomeander necks and channel belt narrowing and incision. The last Holocene incision step was likely triggered by hydrological extremes of the Little Ice Age. The LGM and P/H Ohře River consequently changed from meandering to low sinuous, incised in the valley floor; this incision was completed by river engineering in the 20th century. The Ohře River development can thus be rationalised neither by traditional terrace-step formation model nor by model of the Anthropogenic aggradation.
2 citations
TL;DR: In this article, a design method to determine the thickness of a subsurface stone blanket, how to launch a stone to desired positions, and other innovations for improvement of the stone blanket revetment are discussed.
Abstract: Through construction experience and research, including model tests, on the Nanjing reach of the lower Yantze River, it was found that different methods must be used to stabilize the discharge ratio of two branches around an island, depending on the length ratio of the two branches. When the two branches have a similar length, stabilizing the upstream bends is effective. When the length of one branch is longer than the other, stabilizing the head of the island will be most effective. A subsurface stone blanket of appropriate thickness has been the most popular type of revetment because of its resistance to flow scouring. A design method to determine the thickness of a subsurface stone blanket, how to launch stone to desired positions, and other innovations for improvement of the stone blanket revetment are discussed.
2 citations
19 Aug 2021
TL;DR: In this paper, artificial flexible plastic grass was used in a flood control and ecological restoration project, where the interaction between confluence and vegetation is important for understanding the rules of flood control.
Abstract: The interaction between confluence and vegetation is important for understanding the rules of flood control and ecological restoration. To this end, artificial flexible plastic grass was used in a ...
2 citations