Jokiuoman kartoitus ja virtausolosuhteiden mallinnus tukena perkauksen suunnittelussa: esimerkkinä Eurajoki
نویسندگان
چکیده
Dredging has a significant effect on sediment transportation, water quality and flow conditions in river channel. However, often the effects of dredging are not studied carefully advance. One reason for this is lack suitable study approach. Studies dynamics require high geometric models riverbed, banks floodplain. Accurate terrain bathymetric data also crucial components reliable hydraulic modelling. In study, we created an approach to model presumable impacts dredging. We modelled discharges annual flooding magnitudes Eurajoki River, SW Finland its current form after As low-sloped channel heavily vegetated, aim improve by removing vegetation within reach 8 km. First, riverine environment combining riverbank topography from national Airborne Laser Scanning (ALS) Finnish National Land Survey bathymetry, gathered with Acoustic Doppler Current Profiler (ADCP). The ADCP was attached kayak enable access shallow areas as well. This way, were able geometry fluvial forms few centimetres’ accuracy. Next, modified using GIS software according plan. Finally, used 2D Computational Fluid Dynamics during various events. analysed flood based compared these present situation. These offer improvements management observing
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ژورنال
عنوان ژورنال: Terra
سال: 2021
ISSN: ['2621-0207']
DOI: https://doi.org/10.30677/terra.101421