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題 名 | 土石流攔阻工法之梳子壩壩體幾何設計=The Configuration Design Model of Slit Dam for Structural Measure of Debris-flow Control |
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作 者 | 連惠邦; 柴鈁武; | 書刊名 | 水土保持學報 |
卷 期 | 30:4 1998.12[民87.12] |
頁 次 | 頁321-330 |
分類號 | 434.273 |
關鍵詞 | 土石流; 梳子壩; 防治效率; 開口寬度; 狹縫密度; Debris flow; Slit dam; Control efficiency; Opening width; Slit density; |
語 文 | 中文(Chinese) |
中文摘要 | 經由固液兩相質量守恆理論及渠槽試驗方式,本文分別建立了土砂流出率泥砂體 積濃度比作為梳子壩防治土石流的效率指標參數,以表徵土石流通過梳子壩之後,其攜出土 砂『數量』與『質量』間之關係。同時,本文也結合了土石流泥砂體積濃度、土砂流出率、 壩體上游貯砂率及泥砂體積濃度比等相關公式,就已知的溪流地形及床質條件,在預期的防 治效率下,建立梳子壩開口寬度、狹縫密度及有效壩高等相關幾何參量之一般出流設計模式 ,並首度提出以下游保護區域安全為考量之挾砂水流出流設計模式。最後,為使工程設計有 所依循,特列舉一簡單案例,用以說明梳子壩相關幾何參量之計算步驟及設計流程,提供工 程設計參考之用。 |
英文摘要 | From mass conservation law of two-phase flow and flume experiments, this study constituted the sediment output ratio and volume concentration of sediment, respectively, as efficiency indices for evaluating slit dam on debris-flow control. With them, relationship between the quantity and quality of output sediment after debris-flow passed slit dam can be characterized. Based on the debris flow equations of sediment volume concentration, sediment output ratio, upstream deposit ratio, and sediment volume concentration ratio, this paper also developed the design model of slit dam configuration (i.e., opening width, slit density, and effective height of dam) with expected control efficiency and known river morphology. Finally, a simple case study is applied demonstrate these calculating procedures and design flow chart of dam configuration. |
本系統中英文摘要資訊取自各篇刊載內容。