| Summary: | 碩士 === 國立臺灣大學 === 生物環境系統工程學研究所 === 93 === ABSTRACT
This study used mixed-grain as the materials to do sediment transport flume experiment and observed the motion of sediment in the process of the experiment. We could find that mixed-grain in the channel-bed was occurred different sorting or hiding phenomenon in the different flow discharges.
According to the experimental data of this study and other existing flume data collected from home and abroad, we derived the models for critical discharge and sediment transport conducting unit effective flow discharge, slope and gradation coefficient by multiple regression analysis.
After verification and comparison, the model of this study matched better with the experiment data of both uniform and mixed grain than those of existing sediment transport models. Therefore, using the sediment transport model derived in this study could provide the reasonable result for estimating uniform or mixed grain sediment transport accurately.
Keywords：Mixed Grain Size, Flume Experiment, Sediment Discharge
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