Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
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Optimal Spillway Dimensions for Flood Stage Reduction in the Lower Illinois River with the UNET Model
The one-dimensional unsteady flow model UNET was used to study the propagation of flood waves in the lower Illinois River from Peoria to Grafton. The calibrated and verified model was used to simulate water surface elevations along the Illinois River for existing conditions and for managed Levee and Drainage District (LDD) storage options. To further expand the applications of the lower Illinois River UNET model, the model was extended to include Pool 26 of the Mississippi River to resolve the difficulties in handling the backwater effects from the Mississippi River. This model was used to study different managed storage options to develop systematically organized information and tools for managing floods in the lower Illinois River. It was assumed that spillways will be placed on top of the levees to simulate managed flow into selected LDD storage areas along the lower Illinois River. Two LDDs of difference sizes and locations were selected to study the relationship between the peak flood stage reduction and the sizes of the inflow section of the spillways. The study was based on the maximum water surface elevation of a 50-year frequency flood. Study of the optimal spillway widths for fixed depths and optimal spillway depths for fixed widths indicated that the optimal spillway dimensions for peak flood stage reduction vary according to locations and individual flood events.
Optimal Spillway Dimensions for Flood Stage Reduction in the Lower Illinois River with the UNET Model
The one-dimensional unsteady flow model UNET was used to study the propagation of flood waves in the lower Illinois River from Peoria to Grafton. The calibrated and verified model was used to simulate water surface elevations along the Illinois River for existing conditions and for managed Levee and Drainage District (LDD) storage options. To further expand the applications of the lower Illinois River UNET model, the model was extended to include Pool 26 of the Mississippi River to resolve the difficulties in handling the backwater effects from the Mississippi River. This model was used to study different managed storage options to develop systematically organized information and tools for managing floods in the lower Illinois River. It was assumed that spillways will be placed on top of the levees to simulate managed flow into selected LDD storage areas along the lower Illinois River. Two LDDs of difference sizes and locations were selected to study the relationship between the peak flood stage reduction and the sizes of the inflow section of the spillways. The study was based on the maximum water surface elevation of a 50-year frequency flood. Study of the optimal spillway widths for fixed depths and optimal spillway depths for fixed widths indicated that the optimal spillway dimensions for peak flood stage reduction vary according to locations and individual flood events.
Optimal Spillway Dimensions for Flood Stage Reduction in the Lower Illinois River with the UNET Model
Lian, Yanqing (Autor:in) / Demissie, Misganaw (Autor:in) / Choi, Hyun Il (Autor:in) / Blanco, Andres (Autor:in)
World Water and Environmental Resources Congress 2003 ; 2003 ; Philadelphia, Pennsylvania, United States
17.06.2003
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Water resources , Drainage , Illinois , Security , Unsteady flow , Infrastructure , Floods , Hydraulic models , Models , Water quality , River flow
| British Library Online Contents | 2011
Real-time simulation of flooding in the lower Illinois River with UNET model
| British Library Conference Proceedings | 2005