IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 35th IAHR Congress - Chengdu (2013) : THEME 8 - CLIMATE CHANGE AND HAZARD MITIGATION : The Problem of Breach Morphology and the Outflow Hydrograph in Dam Breaching
The Problem of Breach Morphology and the Outflow Hydrograph in Dam Breaching
Author : Gianluca De Lorenzo and Francesco Macchione
Information about the breaching morphology of real dams are very few, and little is known about the breach shape during failure. Moreover, fluid-mechanics and soil-mechanics have not yet provided anexhaustive theory about breach morphology and breach enlargement process.Therefore, simplified models usually need some empirical assumptions about the breach shape and about its enlargement. The purpose of this paper is to quantify the influence of the shapes usually assumed for the breach on the outflow hydrographs. In order to highlight the role of the breach shapemore, a numerical analysis has been carried out using a simplified physically based model, which needs only one calibration parameter for the aspects concerning erosion. In particular, in this paper the non-dimensional version of the model has been used. It allowedto makesome noteworthy remarks about the most common scenarios of dam-reservoir systems.
File Size : 862,446 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 35th IAHR Congress - Chengdu (2013)
Date Published : 20/07/2016
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