| 研究生: |
呂典翰 Liu, Dian-Han |
|---|---|
| 論文名稱: |
土石流對梳子壩衝擊力之研究 Study on the Impact Force of Slit-Dam by the Debris Flow |
| 指導教授: |
謝正倫
Shieh, Chjeng-Lun |
| 學位類別: |
碩士 Master |
| 系所名稱: |
工學院 - 水利及海洋工程學系 Department of Hydraulic & Ocean Engineering |
| 論文出版年: | 2005 |
| 畢業學年度: | 93 |
| 語文別: | 中文 |
| 論文頁數: | 87 |
| 中文關鍵詞: | 衝擊力 、梳子壩 、土石流 |
| 外文關鍵詞: | slit dam, impact force, debris flow |
| 相關次數: | 點閱:70 下載:3 |
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本研究主要藉由室內人工矩形渠道,模擬土石流撞擊梳子壩,壩體依幾何形狀的不同分為直立型、斜面型、及曲面型。利用精密的測量儀器荷重計、分別裝置於模型後方及上方,藉以取得模型所受平行於渠道、及垂直於渠道之衝擊力數據。探討三種梳子壩壩型在相同條件下,受到土石流衝擊時之受力比較,以期找出受力最小(不易損壞)、最省經費(耗材少)之壩型,供日後應用在現場的土石流防治。
三種梳子壩壩型所受土石流衝擊力,皆隨著土石流流量、實驗渠道坡度之增加而有變大之趨勢。而三種壩型在相同之實驗條件下,以直立型之受力為最大,斜面型次之,曲面型最小。此結果反應出曲面型梳子壩在防治土石流具備兩項優點:1.受力小(不易損壞),2.體積小(節省耗材)。
In this research, we simulated debris flow hits against the slit dam by artificial channel, there are three different kinds of slit dam, they differentiate between geometric shape, include vertical-type, slant-type, and curve-type. In order to acquire the impact force which parallel and perpendicular to the artificial channel, load cell was set up behind the model, and another one was set up on the model. Under the same experiment conditions, we can figure out the different from the impact force of three kinds models. The best kind of model which received the fewest force and made by fewest materials will be found, thus it can be applied to the prevention of debris flow in the future.
The impact force of three kinds slit dam models influenced by debris flow is bigger with more discharge of debris flow and steeper artificial channel. Under the same experiment conditions, the vertical-type slit dam was received largest impact force of debris flow, and curve-type slit dam was received fewest force. These results pointed out the curve-type slit dam have two advantages of prevention of debris flow: 1. received the fewest force(hard to damage), 2. smallest volume(save the materials).
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