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An easy to use calculation method for weir operations in controlled drainage systems
Autor: Bohne, Barbara; Storchenegger, Isidor; Widmoser, Peter
In:
Agricultural Water Management
Bandangabe: Volume 109
Auflage: June
ISBN: ISSN: 0378-3774
Seite: 46 - 53
Jahr: 2012
Einordung:
Institut: Professur Hydrologie und Angewandte Meteorologie
Abstract:
If operated appropriately, drainage systems may serve as vast reservoirs to retain or release water and solutes. This paper describes the hydraulic principles ruling the unsteady reaction of groundwater levels as related to drainage control operations. A set of governing equations suited to be implemented in computer codes was deduced focusing on non steady-state drainage, weir hydraulics, and effects of ditch maintenance. Based upon a simplified layout, two easy to handle computer codes were developed (MATLAB/Octave and Excel versions) enabling local engineers to assess system performance. Controlled drainage systems may be used to reduce leaching of agrochemicals from agricultural land and are valuable tools for preventive flood control. Controlled drainage may further support effective field operations necessary for crop production. Ansprechpartner Weitere Information im WWW
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Letzte Änderung des Eintrages:
20.04.2012
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