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Please use this identifier to cite or link to this item: http://ir.ncue.edu.tw/ir/handle/987654321/19604

Title: 礫石河道的沖蝕試驗之研究-以火炎山礫石沖積物為例
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
Contributors: 地理學系
Keywords: 推移質;礫石;實驗槽;河床坡度
Bed load;Conglomerate rock;Flume;Gradient of channel
Date: 2008-06
Issue Date: 2015-04-29T04:08:37Z
Publisher: 高雄師範大學地理學系
Abstract: 本研究以瞭解礫石河床的推移質搬運方式與坡度的關係,並用以探討火炎山沖蝕溝可能的沖蝕與搬運方式。研究對象為三義火炎山的礫石沖積物,利用柏林自由大學水文地形實驗室,模擬豪雨時的水文現象,探討不同坡度的沖蝕與搬運特性。
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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