Settling of Fine Sediment in a Channel with Emergent Vegetation
作者： A. H. Elliott
DOI: 10.1061/(ASCE)0733-9429(2000)126:8(570)
关键词: Sediment 、 Open-channel flow 、 Particle-size distribution 、 Settling 、 Sink (geography) 、 Environmental science 、 Silt 、 Hydrology 、 Emergent vegetation 、 Water flow 、 Mechanical engineering 、 Civil and Structural Engineering 、 Water Science and Technology
摘要: The potential for enhanced removal of sediment from flowing water in a channel by means settling on vegetation was studied theoretically and experimentally. Settling modeled as distributed sink with spread throughout depth length the channel. Sediment-capture experiments were performed laboratory using model well-sorted silt. theory predicts that has to increase sediment-capture efficiency considerably, this demonstrated experiments. enhancement greater artificial vines than inclined strips. For runs flow velocities >10 mm/s sedimentation less predicted. reduced could be related bed destabilization (which observed some runs), re-entrainment vegetation, or sliding off vegetation.
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