Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Calculation of Levee-Breach Widening Rates
Inundation modeling is often conducted for levee systems to understand current flood risks. The extent of inundation caused by a breach in the levee is highly influenced by the widening rate of the levee breach. This study presents an approach for calculating levee-breach widening rates based on average flow velocity through the breach, embankment height, and erosion characteristics of the soil. Estimates of soil erodibility are derived through an analysis of the measurements of soil erodibility presented in the National Cooperative Highway Research Program (NCHRP) Report 915 database. Levee-breach widening rate curves are calculated based on these erosion properties to demonstrate the approach, and default curves are presented for typical levees built from coarse-grained soils and fine-grained soils. While the most accurate approach for a site is to calculate site-specific widening rate curves based on estimates of local soil erodibility, the default curves presented provide a suitable starting point for initial inundation modeling.
Calculation of Levee-Breach Widening Rates
Inundation modeling is often conducted for levee systems to understand current flood risks. The extent of inundation caused by a breach in the levee is highly influenced by the widening rate of the levee breach. This study presents an approach for calculating levee-breach widening rates based on average flow velocity through the breach, embankment height, and erosion characteristics of the soil. Estimates of soil erodibility are derived through an analysis of the measurements of soil erodibility presented in the National Cooperative Highway Research Program (NCHRP) Report 915 database. Levee-breach widening rate curves are calculated based on these erosion properties to demonstrate the approach, and default curves are presented for typical levees built from coarse-grained soils and fine-grained soils. While the most accurate approach for a site is to calculate site-specific widening rate curves based on estimates of local soil erodibility, the default curves presented provide a suitable starting point for initial inundation modeling.
Calculation of Levee-Breach Widening Rates
B. A. Robbins (Autor:in) / M. K. Corcoran (Autor:in)
2022
28 pages
Report
Keine Angabe
Englisch
Soil Sciences , Civil Engineering , Soil & Rock Mechanics , Ecology , Army , Army corps of engineers , Classification , Data sets , Databases , Embankments , Engineering , Engineers , Failure mode and effect analysis , Flood hazards , Floods , Materials , Measurement , Risk , Risk management , Shear stresses
Engineering Index Backfile | 1934
| Springer Verlag | 2022
Levee Breach Inundation Study, Sacramento County, California
| British Library Conference Proceedings | 1993