頁籤選單縮合
題名 | 水庫橫向沖蝕試驗之研究=Experiment Study of Lateral Erosion in a Reservoir |
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作者 | 賴進松; 張斐章; 楊翰宗; Lai, Jihn-sung; Chang, Fi-john; Yang, Hann-tzong; |
期刊 | 農業工程學報 |
出版日期 | 20000900 |
卷期 | 46:3 2000.09[民89.09] |
頁次 | 頁28-36 |
分類號 | 443.96 |
語文 | chi |
關鍵詞 | 橫向沖蝕; 水力沖刷; 沖灘流量; Lateral erosion; Flushing sediment; Flushing discharge; |
中文摘要 | 橫向沖蝕是一種非機械式排除水庫庫區淤積的方法,其基本上乃是利用輔助設備,截引河川水流,沿水庫庫緣高灘之岸坡,於適當高程開挖水渠至待沖之水庫區段,當水庫洩空時,沿河道截引水流入渠,藉由高灘深槽形態所造成之高程落差,經由水力沖刷及重力侵蝕作用得以洩水沖灘以排除淤積。本研究乃選定庫區淤積較嚴重之大埔水庫為對象,在其庫區淤積之高灘區域進行局部的模型試驗;模型中架構取水、輸水及沖灘設施,進行橫向沖蝕之沖刷試驗。模型試驗結果發現橫向沖蝕輸砂量可表示為沖灘流量與沖刷坡降之關係式,其與中國大陸在小道口水庫及黑松林水庫現場觀測之資料有相近之趨勢和特性。 |
英文摘要 | Creating lateral channels to generate lateral erosion is one of the effective methods to flush reservoir floodplain deposits without mechanical dredging. If the reservoir can be empty by releasing water from the reservoir, the flushing channel may be created and the floodplain deposits can be appeared. In this study, the experiments are conducted in the physical model of the Tapu reservoir to investigate lateral erosion in the lateral channel. Diverted upstream water to the lateral channels for flushing sediment deposited from the floodplain into the flushing channel. Diversion channels with storage tank and outlet openings are constructed along the bank of the reservoir. The experimental results show that the sediment discharge of lateral erosion is a function of flushing discharge and water surface slope in the lateral channel. It is also found that the characteristics of lateral erosion are similar to those measured at the Shaudowkoa reservoir and the Haisungline reservoir in Chain. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。