Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Methodology for Evaluating Inlet Protection Practices Using Large-Scale Testing Techniques
Most roadway construction projects disturb existing vegetation exposing bare soil to environmental variables (i.e., precipitation, wind, and freeze and thaw) that cause erosion. Soil eroded during storm events is conveyed by storm water runoff and may become deposited in receiving waterways. Inlet protection practices (IPPs) are temporary erosion and sediment controls commonly used around inlet drainage structures to prevent erosion while also retaining sediment on-site. Effective IPPs impound storm water, prevent upstream channel erosion, and promote settling along the perimeter of a device. Stringent effluent regulations coupled with greater public awareness with regards to surface water pollution have created the need for understanding the performance of commonly used erosion and sediment control practices. This study developed a methodology and testing apparatus for large-scale reproducible performance-based testing of standard IPPs at the Auburn University Erosion and Sediment Control Testing Facility. A two-phased testing protocol comprised of installation improvements and performance evaluations was developed. A test channel, 13.42 m (19 ft) in length, 5.80 m (19 ft) in width, sloped at 5% towards a 1.22-m (4 ft) inlet was constructed to test IPPs. Using the Alabama rainfall and erosion characteristics, water and sediment delivery mechanisms were designed and developed for implementing experimental flows and sediment introduction rates of () and (), respectively. Data collection includes pretest and posttest channel surveys, flow-through rates, total suspended solids, and turbidity. Finally, a case study using a typical wattle barrier IPP demonstrates the developed testing methodologies, installation improvements, and performance measures.
Methodology for Evaluating Inlet Protection Practices Using Large-Scale Testing Techniques
Most roadway construction projects disturb existing vegetation exposing bare soil to environmental variables (i.e., precipitation, wind, and freeze and thaw) that cause erosion. Soil eroded during storm events is conveyed by storm water runoff and may become deposited in receiving waterways. Inlet protection practices (IPPs) are temporary erosion and sediment controls commonly used around inlet drainage structures to prevent erosion while also retaining sediment on-site. Effective IPPs impound storm water, prevent upstream channel erosion, and promote settling along the perimeter of a device. Stringent effluent regulations coupled with greater public awareness with regards to surface water pollution have created the need for understanding the performance of commonly used erosion and sediment control practices. This study developed a methodology and testing apparatus for large-scale reproducible performance-based testing of standard IPPs at the Auburn University Erosion and Sediment Control Testing Facility. A two-phased testing protocol comprised of installation improvements and performance evaluations was developed. A test channel, 13.42 m (19 ft) in length, 5.80 m (19 ft) in width, sloped at 5% towards a 1.22-m (4 ft) inlet was constructed to test IPPs. Using the Alabama rainfall and erosion characteristics, water and sediment delivery mechanisms were designed and developed for implementing experimental flows and sediment introduction rates of () and (), respectively. Data collection includes pretest and posttest channel surveys, flow-through rates, total suspended solids, and turbidity. Finally, a case study using a typical wattle barrier IPP demonstrates the developed testing methodologies, installation improvements, and performance measures.
Methodology for Evaluating Inlet Protection Practices Using Large-Scale Testing Techniques
Perez, M. A. (Autor:in) / Zech, W. C. (Autor:in) / Donald, W. N. (Autor:in) / Fang, X. (Autor:in)
06.08.2014
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
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