Ekstrapolacija pretočne krivulje vodomerne postaje s hidravličnim modelom HEC-RAS

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Language:	Slovenian
Year of publishing:	2008
Source:	Ljubljana
Typology:	2.11 - Undergraduate Thesis
Organization:	UL FGG - Faculty of Civil and Geodetic Engineering
Publisher:	[M. Šupek]
UDC:	627.133(043.2)
COBISS:	3945057
Views:	2794
Downloads:	665
Average score:	0 (0 votes)
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Secondary language:	English
Secondary title:	Gauging station rating curve extrapolation using HEC-RAS
Secondary abstract:	Rating curve represents stage-discharge relationship and is used to transform observed water level into discharge. At high water levels, the stage-discharge relationship often has to be extrapolated due to lack of measured data. The graduation thesis analyses rating curve extrapolation for gauging station Litija on river Sava. The intent of thesis is to narrow the expansion area of extrapolation. There are different methods for extrapolating stage-discharge relationships and most advanced of them is to use a numerical model. The hydraulic simulation was performed with HEC-RAS, where the river Sava main channel and floodplains geometry had to be surveyed. Using discharge measurements made by acoustic Doppler current profiler (ADCP) and observed water levels, the roughness coefficients of the hydraulic model were calibrated and simulation for high discharges was taken. Due to relative wide floodplains downstream of gauging station, also quasi 2-D simulation using split-flow was taken to verify if 1-D model gives satisfactory results. Comparing both simulations, very good accuracy is established, so the use of 1-D simulation is certified. The final results show about 10 % difference between rating curve developed with HEC-RAS and rating curve used in ARSO.
Secondary keywords:	gauging station;rating curve;hydraulics;extrapolation;HEC-RAS;
File type:	application/pdf
Type (COBISS):	Undergraduate thesis
Thesis comment:	Univ. v Ljubljani, Fak. za gradbeništvo in geodezijo
Pages:	XIV, 72 str., pril.
Type (ePrints):	thesis
Title (ePrints):	Ekstrapolacija pretočne krivulje vodomerne postaje s hidravličnim modelom HEC-RAS
Keywords (ePrints):	HS;diplomska dela;UNI;vodomerna postaja;pretočna krivulja;hidravlika;ekstrapolacija;HEC-RAS;
Keywords (ePrints, secondary language):	gauging station;rating curve;hydraulics;extrapolation;HEC-RAS;
Keywords (ePrints, secondary language):	gauging station;rating curve;hydraulics;extrapolation;HEC-RAS;
ID:	8309580