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Experiment on Fluvial Processes of Conglomerate channel-an Example of Hoyenshan Conglomerate Sediments
|Authors: ||林俊全;陳毅青;林建偉;任家弘;Achim Schulte;Margot Bose|
Bed load;Conglomerate rock;Flume;Gradient of channel
|Issue Date: ||2015-04-29T04:08:37Z
This study mainly focuses on the experiment of fluvial process on conglomerate channels. The sample comes from our research area, Hoyenshan, mid-western Taiwan. The main purpose is to understand the relationship between the delivery of conglomerate pebbles as bed load and the gradient of the channel.
The flume experiment has been carried out at the Freie University, Berlin, Germany. For the experiment, the main factors involved are the flow speed and gradient of channel and we control the flow speed and make the gradient as the only variable in the experiment. The characteristics of the transportation of bed load are then being discussed.
The results show that the bed load is not transported too much on gentle channel under the inclination less than 4 degree. However, the sediments will be removed dramatically when the gradient of channel higher than 4 degree. If the gradient is over 7 degree, or 15%, the bed loads will be transported within 10 minutes at the flow speed between 2 to 2.5 m/sec. The results also demonstrate the power of the fluvial processes and the relationships between channel gradient and bed load transportation.
|Relation: ||環境與世界, 17: 21-36|
|Appears in Collections:||[地理學系] 期刊論文|
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