Oueme Bridge, Hydraulic Study: Flooding Risk And Stability Assessment Using MIKE 21
Price
Free (open access)
Transaction
Volume
26
Pages
10
Published
1998
Size
1,077 kb
Paper DOI
10.2495/HY980401
Copyright
WIT Press
Author(s)
M. Hogedal
Abstract
Oueme Bridge, hydraulic study: flooding risk and stability assessment using MIKE 21 M. Hogedal e-mail: mlh@ramboll.dk Abstract With the objective to evaluate if rehabilitation of the road crossing the Oudme* River in Benin will lead to an increased risk of failure for the Querne" Bridge due to higher extreme water levels and/or discharges at the bridge the MIKE 21 HD model was used to simulate the extreme flow conditions in the Oudmd River basin before and after the planned road rehabilitation. The stability of the bridge was subsequently analysed. The main findings in the project were the following: 1) It was confirmed that large stretches of the existing road frequently are being flooded, whereas no parts of the rehabilitated road are being flooded; 2) The water level at the bridge does not increase after rehabilitation of the road; 3) The water discharge at the bridge is significantly increased for return periods above app. 1 year; and 4) The increased discharge does not affect
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