Hydraulics Of Levee Overtopping
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Author | : Lin Li |
Publisher | : CRC Press |
Total Pages | : 220 |
Release | : 2020-09 |
Genre | : Technology & Engineering |
ISBN | : 9780429297557 |
"Earthen levees are extensively used to protect the population and infrastructure from periodic floods and high water due to storm surges. The causes of failure of levees include overtopping, surface erosion, internal erosion, and slope instability. Overtopping may occur during periods of flooding due to insufficient freeboard. The most problematic situation involves the levee being overtopped by both surge and waves when the surge level exceeds the levee crest elevation with accompanying wave overtopping. Overtopping of levees produces fast-flowing, turbulent water velocities on the landward-side slope that can potentially damage the protective grass covering and expose the underlying soil to erosion. If overtopping continues long enough, the erosion may eventually result in loss of levee crest elevation and possibly breaching of the protective structure. Hence, protecting levees from erosion by surge overflow and wave overtopping is necessary to assure a viable and safe levee system. This book presents a cutting-edge approach to understanding overtopping hydraulics under negative free board of earthen levees, and to the study of levee reinforcing methods. Combining soil erosion test, full-scale laboratory overtopping hydraulics test, and numerical modeling for the turbulent overtopping hydraulics, it provides an analysis that integrates the mechanical and hydraulic processes governing levee overtopping occurrences and engineering approaches to reinforce overtopped levees. Topics covered surge overflow, wave overtopping and their combination, full-scale hydraulic tests, erosion tests, overtopping hydraulics, overtopping discharge, and turbulent analysis. This is an invaluable resource for graduate students and researchers working on levee design, water resource engineering, hydraulic engineering, and coastal engineering, and for professionals in the field of civil and environmental engineering, and natural hazard analysis"--
Author | : Lin Li |
Publisher | : CRC Press |
Total Pages | : 445 |
Release | : 2020-09-20 |
Genre | : Technology & Engineering |
ISBN | : 1000195236 |
Earthen levees are extensively used to protect the population and infrastructure from periodic floods and high water due to storm surges. The causes of failure of levees include overtopping, surface erosion, internal erosion, and slope instability. Overtopping may occur during periods of flooding due to insufficient freeboard. The most problematic situation involves the levee being overtopped by both surge and waves when the surge level exceeds the levee crest elevation with accompanying wave overtopping. Overtopping of levees produces fast-flowing, turbulent water velocities on the landward-side slope that can potentially damage the protective grass covering and expose the underlying soil to erosion. If overtopping continues long enough, the erosion may eventually result in loss of levee crest elevation and possibly breaching of the protective structure. Hence, protecting levees from erosion by surge overflow and wave overtopping is necessary to assure a viable and safe levee system. This book presents a cutting-edge approach to understanding overtopping hydraulics under negative free board of earthen levees, and to the study of levee reinforcing methods. Combining soil erosion test, full-scale laboratory overtopping hydraulics test, and numerical modeling for the turbulent overtopping hydraulics. It provides an analysis that integrates the mechanical and hydraulic processes governing levee overtopping occurrences and engineering approaches to reinforce overtopped levees. Topics covered: surge overflow, wave overtopping and their combination, full-scale hydraulic tests, erosion tests, overtopping hydraulics, overtopping discharge, and turbulent analysis. This is an invaluable resource for graduate students and researchers working on levee design, water resource engineering, hydraulic engineering, and coastal engineering, and for professionals in the field of civil and environmental engineering, and natural hazard analysis.
Author | : Waterways Experiment Station (U.S.) |
Publisher | : |
Total Pages | : 74 |
Release | : 1957 |
Genre | : Hydraulic models |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 144 |
Release | : 2011 |
Genre | : Hydraulics |
ISBN | : |
Author | : Jeremy A. Sharp |
Publisher | : |
Total Pages | : 12 |
Release | : 2012 |
Genre | : Hydraulics |
ISBN | : |
Author | : Lin Li |
Publisher | : CRC Press |
Total Pages | : 0 |
Release | : 2020-09-21 |
Genre | : Business & Economics |
ISBN | : 9781000043129 |
Earthen levees are extensively used to protect the population and infrastructure from periodic floods and high water due to storm surges. The causes of failure of levees include overtopping, surface erosion, internal erosion, and slope instability. Overtopping may occur during periods of flooding due to insufficient freeboard. The most problematic situation involves the levee being overtopped by both surge and waves when the surge level exceeds the levee crest elevation with accompanying wave overtopping. Overtopping of levees produces fast-flowing, turbulent water velocities on the landward-side slope that can potentially damage the protective grass covering and expose the underlying soil to erosion. If overtopping continues long enough, the erosion may eventually result in loss of levee crest elevation and possibly breaching of the protective structure. Hence, protecting levees from erosion by surge overflow and wave overtopping is necessary to assure a viable and safe levee system. This book presents a cutting-edge approach to understanding overtopping hydraulics under negative free board of earthen levees, and to the study of levee reinforcing methods. Combining soil erosion test, full-scale laboratory overtopping hydraulics test, and numerical modeling for the turbulent overtopping hydraulics. It provides an analysis that integrates the mechanical and hydraulic processes governing levee overtopping occurrences and engineering approaches to reinforce overtopped levees. Topics covered: surge overflow, wave overtopping and their combination, full-scale hydraulic tests, erosion tests, overtopping hydraulics, overtopping discharge, and turbulent analysis. This is an invaluable resource for graduate students and researchers working on levee design, water resource engineering, hydraulic engineering, and coastal engineering, and for professionals in the field of civil and environmental engineering, and natural hazard analysis.
Author | : |
Publisher | : |
Total Pages | : 283 |
Release | : 1991 |
Genre | : |
ISBN | : |
The major objectives of the workshop were to (1) identify issues related to present procedures for determining riverine levee project height, including freeboard, (2) discuss alternative procedures for determining levee height, and (3) establish a direction for implementing new policy and procedures for determining levee height that would eliminate the concept of freeboard, and incorporate risk and uncertainty in the analysis. Freeboard overtopping and safety for levees with low levels of protection; Floodplain encroachment and its effects on levee overtopping design; Effect of channel erosion on freeboard at Houston, Minnesota; Hydraulic uncertainties in water surface calculations.
Author | : R. Y. Hudson |
Publisher | : |
Total Pages | : 61 |
Release | : 1957 |
Genre | : |
ISBN | : |
A hydraulic model investigation of levee sections proposed for impounding Lake Okeechobee was conducted to determine the effectiveness of different types of sections in preventing excessive overtopping of the protective levees by hurricane-generated waves. Most of the tests were conducted on 1:30-scale models of the levee sections installed in a wave flume 94 ft long with a testing section 1.5 ft deep and 1 ft wide. A few tests were conducted in a larger wave flume (119 ft long, 4 ft deep, and 5 ft wide) using a linear scale of 1:17, model to prototype. The height of wave run-up on and volume of water overtopping levee sections of various slopes, crown elevations, and lakeside berms for several depths of water at beach toe and levee toe were determined. (Author).
Author | : Steven A. Hughes |
Publisher | : |
Total Pages | : 14 |
Release | : 2008 |
Genre | : Levees |
ISBN | : |
Author | : GĂ©rard Degoutte |
Publisher | : Editions Quae Gie |
Total Pages | : 0 |
Release | : 2022-02-03 |
Genre | : Technology & Engineering |
ISBN | : 9782759232840 |
Levees are built on many rivers and mountain torrents to protect populations against floods. During medium floods, a well-constructed levee offers sufficient protection without requiring additional hydraulic structures. But this same levee represents a source of danger during high floods, since there is a risk of overtopping. Water that spills over a levee may create a breach that could potentially provoke flash flooding in the area it was supposed to protect, endangering human lives and infrastructure.It is therefore advisable to equip levee systems with spillways, which are common appurtenant structures on dams. Yet spillways on levees play a far more complex role than those on dams, from securing protected areas to flood control. These structures can function as safety spillways or diversion spillways, or both (especially the older ones). This technical handbook, first published in French in 2012, covers different types of spillways on river levees, including their function, hydraulics, river morphology, civil engineering, and flood management.Written by a working group led by INRAE, it is intended for levee managers, control authorities, engineering firms, and hydraulics or civil engineering students. Given increasing international interest in levees and flood protection systems, particularly following ICOLD's creation of a Technical Committee on Levees, INRAE decided to update and translate this guide into English to share the French experience.